From time to time, the oil in car engines needs to be changed. This operation is not difficult. However, car owners are often interested in the question, is it necessary to flush the engine? Let's figure out how, when and why it is necessary to flush the engine. Now most people turn to car services for these purposes, but this does not guarantee that the procedure will be performed correctly.

Does the engine need flushing?

It is a matter of each case to decide whether to flush a car engine. If you fill in high-quality engine oil in a timely manner, then no more cleaning is needed.

This is achieved due to the fact that any good car oil contains several additives and at least one of them constantly cleans all internal parts.

But if the car was recently purchased and the history of its maintenance is unknown, or a decision has been made to replace the lubricant and the question arose whether it is necessary to flush the engine when changing the oil, then the answer is unequivocal - yes.

However, it must be remembered that each engine requires a lubricant with certain qualities and a special composition. This is the only way to achieve normal and continuous motor operation.

So, flushing the engine must be carried out if:

• The vehicle was purchased recently and there is a possibility that there were no regular oil changes in the past.
• Repair work was carried out for the implementation, which required opening the cylinder head.
• The brand or manufacturer is changing.
• There is reason to suspect that fuel, antifreeze, or poor quality grease has been poured into the engine.
• It was decided to change the oil viscosity or composition (for example, from synthetics to semi-synthetics or vice versa)

The flushing process helps to flush out deposits that have accumulated in the crankcase, oil passages and parts.

Self-flushing engine

Flushing, like the oil change operation, is fairly straightforward. Anyone who can hold a wrench in his hand can cope with it. But still, in order not to harm the car, you should know how to properly flush the engine without harming its insides.

Motor flushing process:

• It is necessary to drain all the old oil from the heated internal combustion engine. Then flushing oil is poured into the upper neck.
• It should be about as much as it is supposed to fill the working staff. Then the top cover is screwed on and the engine starts.
• On flushing, the motor should run for 5-10 minutes, this is enough. Next, the plug in the pan is unscrewed again, then the flushing oil is poured out.
• If possible, it is advisable to "tilt" the machine in different directions - so that there is more glass.
• The used filter is removed.
• Fresh oil is added and a new filter is installed.

If the flushing is carried out with a specialized agent poured into the car oil (gentle), then after pouring it:

• For several days, the machine is operated in a "break-in" mode;
• Maximum draining of oil and removal of the filter element is carried out;
• New oil is poured and a filter is installed.

It should be remembered that in order for the car to work perfectly, it is necessary to flush the engine especially well from oil, if it is not credible, and from all contaminants.

All procedures should be performed with high-quality oil, which will subsequently be used as the main one for the operation of the motor.

Self-oil change

The machine is parked on level ground. There is a pallet at the bottom of the engine. It's just a container that attaches to the motor.

There is a cork at the bottom of the pallet. To drain the old oil, you need to place a container under the pan and unscrew this plug. When all the mining runs out of the hole, the plug is screwed back.

Next stage. The cover on the top of the engine opens. A funnel is inserted into the hole. You can read about the amount of car oil that needs to be poured into the engine in the instructions attached to the car. Sometimes it is 2 liters, sometimes 3 or 3.5 liters.

When the required volume is filled in, you should wait a little, usually 5-10 minutes is enough. During this time, most of the mining will escape into the pallet.

Then you should pull out the dipstick. Finding it is easy. Often its upper extremity is ring-shaped. The probe must be wiped with a rag, reinserted into the hole, lowering it down to the limit. Then he pulls out again.

There are notches on the lower end of the stylus. One of them is the minimum oil level, the second is the maximum. If the oil is filled as much as needed, it can be seen on the dipstick. Its upper border will be located near the upper notch.

How often should the engine be flushed

Now about how often the engine should be flushed. Neither flushing fluid nor engine oil completely flows out through the hole in the sump. From 5 to 20 percent remains due to irregularities in the motor. It remains in the channels, and everything else that is present in the engine.

As a result, if 1.6 liters of oil is poured into the engine, then when it is poured, up to 400 milliliters remains inside. If the engine is flushed, then this volume will be the flushing composition. At the same time, it will be simply dirty, since it will contain an old grease that has worked out its life.

Engine oil contains various additives. Due to their presence and combination, its quality is improved. The additives provide viscosity, prevent the formation of foam, have anti-corrosion properties, and so on.

What happens when new engine oil is mixed with a quarter of the impurity-laden flush fluid? First, good oil becomes diluted with flushing fluid.

Second, in a unit volume of the resulting mixture, there are a quarter less additives than it should be. This means that the quality of the lubricant is reduced and motor damage is more likely.

From the above, it becomes clear that it is better not to flush the engine every time you change the oil. It is better to do this when a transition is made from summer oil to winter oil and vice versa, or when synthetics are changed to semisynthetics.

In this case, it is desirable that the viscosity indices either coincide or have a close value.

It is advisable to flush the engine after buying the car from hands. After all, it is not known what the previous owner actually used. It should be washed even when the car is operated in difficult conditions.

ICEs with turbines should be especially noted. These units require good, clean oil. Otherwise, a breakdown may occur, and the turbine is an expensive device.

So it is better to flush motors with turbines more often. This is usually done once every two or three replacement processes.

Features of flushing the engine with different means

There are several ways to flush engines. One of them, the oldest, is the use of diesel fuel. True, it is undesirable to use it for flushing imported vehicles.

If there are no other options, then the engine does not need to be started in such cases. You can simply unscrew the spark plugs and turn the crankshaft several times with the starter. Then, after pausing for 15 minutes, turn the crankshaft again, after which the diesel fuel must be poured.

As for the flushing fluids offered in retail outlets, they are always based on ordinary mineral oil with added additives, which wash the engine systems.

There are two types of flushing oils:

1. long-acting,
2. short.

The former are rarely used now. Their use implied that the car had to be operated on such oil for a day or two. Then it was poured, and oil intended for operation was taken into the engine.

The disadvantage was that the owner of the car had to call in to the service station twice, or twice to deal with the engine of his car. In addition, flushing oil values \u200b\u200bare always lower than those intended for continuous operation.

So when driving with such oil, you cannot accelerate quickly, you cannot give the engine high revs, since its parts will simply be lubricated normally.

Another disadvantage is that there are alkalis in the flushing oil, which can corrode the oil seals. After prolonged contact with such substances, the oil seals lose their softness and become brittle.

The best option is to use modern detergents. Although the concentration of detergent additives in them is higher than in those mentioned above, in 10-15 minutes of operation they do not have time to harm the rubber parts.

In addition, these flushing oils always contain an oil seal protection additive. At the same time, it does not come into contact with the metal, on the contrary, contributing to their washing from deposits.

The three most popular flushing oils

Lukoil flushing oil possesses good qualities. It contains additives that reduce wear of parts. Of course, the detergent properties are also quite effective.

Flushing oil produced by the Tyumen oil company TNK-OIL has stabilizing and dispersing properties. True, it washes the engine not so effectively.

The qualities of "Verylub", due to the large number of additives, are quite high. It reduces engine wear and washes it well. It should be noted that this tool prevents the formation of scoring.

To get the maximum effect from changing the car oil, after draining the used lubricant, the engine must be cleaned of residues and sediment. And in this case, the question arises as to what is the best way to flush the engine before changing the oil.

But is it worth rinsing the engine when, after this procedure, the remains of the cleaning agent, like previously used oil, can remain inside? According to statistics, after flushing the internal combustion engine, 5 to 20 percent of the liquid remains inside.

So, depending on the quality of the work performed, in a power plant with a volume of 1.8 liters, for example, up to 400 ml of flushing fluid can remain. Therefore, the questions about which flushing of the engine is better and what it is worth to flush the engine after decoking, so as not to harm the car, are very relevant.

How to wash the engine from oil

When choosing a means for cleaning the engine oil from the engine, it is necessary to proceed from the fact that this substance should have a minimal negative effect on fresh engine oil.

The active components and additives of the latter are capable of reacting with various ingredients in the flushing, causing a decrease in viscosity and foaming of the lubricant.

All this affects the performance characteristics of the oil, which can significantly "sink", which, ultimately, will negatively affect the performance and resource of the power unit.

Disputes over the advisability of cleaning the engine have escalated against the backdrop of an increase in used car sales, as well as a general slowdown in the renewal of the vehicle fleet in the Russian Federation.

Often, the purchase of a used vehicle is a pig in a poke, and cleaning the internal combustion engine seems reasonable, because it is almost impossible to determine the condition of the engine oil.

When to clean

If you bought a car with a dubious maintenance history, then it's time to think about flushing the power unit. It is not uncommon for new owners to find unpleasant surprises after acquiring a coveted vehicle, in the form of impressive deposits in the upper part of the internal combustion engine.

Therefore, when looking for a car in the secondary market, do not be too lazy to check the oil filler neck. And it is better to use a flashlight for this in order to examine those parts that the cunning seller could not quickly clean up.

The question of which means to choose and how to use engine flushing is also relevant in the case of changing old oil to grease with a different type of base. This is, first of all, about the transition from mineral oils to synthetic analogues.

Internal combustion engine cleaning options

Today, car power units are cleaned of old grease in various ways.

Five-minute flush

This agent is poured into the engine just before changing the engine oil, mixing with "working off". After that, the internal combustion engine is started, operating at idle speed for 5-10 minutes. This is followed by the traditional draining of the used composition, changing the filter and pouring in new grease.

Flushing oil

Here, a specialized motor lubricant is used, which is poured in after removing the used composition. The engine runs idle with this oil for some time, after which the substance is changed to fresh car oil, and the filter is cleaned.

Washes they ride with

This option allows you to drive a certain distance with the cleaning agent. A special substance is added to the old grease about a hundred kilometers before the next oil change, and up to this point I operate the car correctly and accurately. When the time comes for maintenance, the engine oil is changed according to the standard procedure.

Excess lubricant

This option is recommended when changing grease to a composition with a different base, or for flushing very dirty engines. First, you should drain the used lubricant and pour in the composition that will be used in the subsequent operation of the car.

The amount of fresh oil can only reach a couple of liters. The engine does not idle for long. After that, all the grease is changed back to fresh, and a new filter is installed.

This is the answer to the question of which flushing of the engine washes better.

The best flush for the engine cooling system

For the cooling system of an internal combustion engine, flushing with water is well suited. This method allows you to solve the problem quickly and at minimal cost.

The use of acids is more effective. This option involves the use of citric or phosphoric acid, which are diluted in distilled water in a proportion of 100 g per 1 liter.

The liquid poured into the cooling system remains there for at least three quarters of an hour. This procedure should be preceded by flushing with plain water, which is repeated after the acid has been drained from the system. The final water rinse requires 4-5 complete cycles to completely neutralize the acidic environment.

Often, motorists resort to bite washing. In this case, an aqueous solution is formed in a ratio of 1 to 10. In order for the cleaning agent to function well, after pouring the solution into its system, it is heated to about 100 degrees Celsius.

After that, it is left in the system for about 10 hours. If, when draining the solution, there is no dirt and / or scale in it, then there was not enough time, and the procedure should be repeated.

Soda washing also finds its application, but exclusively for cleaning copper and / or brass engine components. For these purposes, 50 grams of soda is diluted in a liter of ordinary water. This composition is cheap, but it does an excellent job.

In each case of flushing the engine, which are described above, it is necessary to monitor the oil pressure. First of all, this concerns "engines" with supercharging and diesel engines, for which the lack of lubrication is critical and unacceptable.

Automotive companies say that flushing the internal combustion engine with diesel fuel is very effective and economical. For these purposes, people use both pure diesel fuel and a mixture with engine oil in a 1 to 1 ratio.

Experts, on the other hand, answering the question of the better to flush a diesel engine, suggest one of the methods described above. In addition, it should be understood that solarium is capable of destroying various rubber seals and structural elements.

Effective engine flushing. Engine cleaning methods that really work

How to keep your engine lubrication system clean for years to come. After all, this factor is one of the most important for the health of the engine during vehicle operation. What is it for, let's figure it out. Sludge, slag, carbon are all the result of the combustion process in the engine. When we buy a car, due to lack of time, funds, etc., we simply forget about competent car maintenance. And this is delayed for a long time, during which the sludge in the form of combustion products settles on the engine parts. Due to this, their friction increases - metal on metal, respectively, destruction occurs.

The oil filter does not always cope with its task and microparticles that did not fall under the filter begin to circulate in the engine, causing microscopic scratches, damage to the cylinder walls and bearings. Valves begin to stick, hydraulic lifters knock, pistons are disrupted, causing engine vibrations. Then the car owner wonders why the engine is eating oil in liters per 1000 km. why such a large fuel consumption. Here is the result of the owner's inaction, see the picture below. This motor has not passed even 30,000 km. Look in what condition it is.

Why flush the engine

What to do you ask ?! And do nothing, you need to rinse, that's all.
Many are skeptical about flushing the engine, for good reason. A lot of junk appeared on the market, allegedly flushing, which in its composition contains an ultra-high solvent and is in no way suitable for the engine. Never mind cheap flushes.

DO NOT take the first one from the store shelf.
A good flushing is a product that will restore compression in the engine cylinders, effectively work to remove sludge, dirt, and not only let it fall off, but also dissolve it, which will not clog the channels and easily be removed from the mixture system.
Also, a good flush should cover all microscopic defects in the motor, and restore both oil seals, iak and all rubber seals.

The pros and cons of flushing the engine.

Poor flushing:
- Corrosion of the stuffing box due to engine leakage
- Loss of compression
- Increased oil consumption
- power loss
- clogged channels in the engine

Pros of good flushing:
- Engine compression restored (You can do a test before and after use)
- reduced fuel and oil consumption
- Cleaning from sludge
- The car becomes more acceptable, easier
- The noise in the engine is reduced
- TUV RUF ROHS approved

Car engine cleaning methods

Let's look at several ways to effectively clean the engine from carbon deposits and sludge.

1. In spare parts stores you can find products such as motor oil with a viscosity of SAE 40. This is a seasonal summer product that has an even higher detergency and effectively cleans the engine.

Drain the used engine oil and refill without changing the oil filter. Start the engine and idle for about 15-30 minutes, you can ride a little.
Then drain the oil, most likely it will be black, as it will collect all the dirt that has collected on the walls, parts, etc. Repeat everything that was done before until the color of the oil is the same as you filled it in.

This is one of the best ways to flush the engine, and after the clean oil is drained, you will be sure that the engine is clean.
Result. After this method of flushing in the engine of the problem Ford Explorer 1992, oil and fuel consumption decreased, the engine began to run quieter, the car became smoother and more responsive.

2. The second way is to wash the motor well.
Flush from Liquid Moli Engine flush - in the common people, has long deserved recognition. It is poured into the engine in used oil, the engine warms up for about 10 minutes and then is drained. excellent, easy-to-use product, and most importantly effective.

Always take it as a consumable when changing engine oil. Long-term flushing is also suitable here if everything is really bad.

Fill it 300 km away. before the shift, the cleaning has already begun.

Lambda Oil Primer.

Here's another cool and super effective car engine flush thing - Lambda Oil Primer.

This product is TUV, ROHS and VAG approved. Works well in restoring the compression of the motor. Many who used it just wanted to do a compression test before and after use. The results were excellent after washing. Perfect cleanliness and operation of the motor, as well as its subsequent protection.
It is used in gasoline and diesel engines. One of the best premium flushes in the world.

As for the characteristics of the product:
Effectively cleans the oil lubrication system, preventing problems associated with the accumulation of sludge, dirt, deposits. After cleaning, a clean oil is guaranteed in a clean engine for many kilometers.
It is used in both the engine and gearboxes and differentials. It contains a lubricant that protects mechanical parts during the cleaning process.
Suitable for all types of modern and old benz. and diz. engines. added to any engine oil.

Flushing oil - This is one of the types of products that are used to flush the engine before the next engine oil change. With its help, you can remove not only the old grease directly, but also the products of its decomposition, combustion and chemical decomposition or when switching to another brand.

Such a lubricant is poured into the system after the old slurry has been drained, allowed to run for several minutes (depending on the specific brand) at idle speed, drained, and only after that new oil is poured in, which is supposed to be driven on an ongoing basis.

Engine flushing oil has a "competitor" in the face of the so-called. However, compared to the latter iCE flushing oils have a number of advantages... The most important of them is the gentle effect of the composition on the engine elements (including rubber seals) and their surfaces, as well as the efficiency of use. The fact is that in "five minutes" aggressive solvents are often used, which simply wash out any oil. In contrast, flushing compounds chemically displace waste slurry and protect the oil system from wear and harmful effects.

The need to use flushing oil

Do you need flushing oil at all? Maybe we can do without him? Let's immediately answer this question - yes, you can really do without it, but it is fraught with trouble for the engine. And they are primarily due to the fact that the new oil, which will be poured into the crankcase, will mix with old chemical compounds, which are the results of the work of the previous lubricant, as well as banal dirt, carbon deposits and other suspensions. Not only will all this immediately spoil the performance of the new oil (no matter how good it is), it will also clog, albeit slightly, the new oil filter.

Oil flushing of the engine can be neglected in the following cases:

• you are the first and only owner of the car;
• engine oil has always been changed on time;
• for replacement, they used oil recommended by the car manufacturer or even better (for example, synthetics instead of semi-synthetics);
• during the operation of the car, you have never poured dubious brands of oil into the engine or diluted the agent available there with some incomprehensible additives, compositions, and so on.

If at least one of the listed conditions is not met, then it is better to think about which flushing oil is best used for the corresponding procedure. Flushing is especially necessary in the following cases:

• When buying a car from hands... After all, you do not know for sure which oil was used by its previous owner before.
• If deposits on the top of the engine become excessive... This can be recognized with a flashlight, shining through the neck and slightly to the side.
• When changing from one type of oil to another... For example, from mineral to semi-synthetics, synthetics and so on.
• When severe operating conditions motor (after high loads).
• After overhaul engine.

And simply, if you use not the most expensive and high-quality oil, then prevention will not be superfluous. As you know, it costs less than repairs.

How to wash the engine

Now let's move on directly to the question of. Indeed, today their choice is wide. Below is a ranking of the most popular washes with a description of their characteristics and features. The list of seven tools was compiled based on reviews and tests from the Internet. He will help you find the best flushing oil.

Produced in Japan and is one of the best in its class. It contains hydrocarbons, organic solvents and antiwear additives. The main advantage of ZIC Flush is its inert chemical composition. This means it is safe for rubber and plastic engine parts. At the same time, it effectively flushes out old oil, carbon deposits and decomposition products of chemical compounds.

A feature of the tool is its undesirable use in old engines with a large amount of deposits, since there is a risk of them being washed out and clogging the oil channels with them.

It is sold in 4 liter canisters. The price of one is about 650 rubles. Article - 162659.

• Benefits:
• High work efficiency;
• Gentle for plastic and rubber engine parts;
• Can be used in all types of motors.

• Disadvantages:
• High price;
• Cannot be used in old and / or very dirty motors;
• High probability of buying a fake due to its popularity.

This flushing oil can also be ranked among the leaders. It is produced in Japan. A distinctive feature of this grease is the fact that it not only dissolves dirt from the surface of parts, but also leaves it in a suspended state, so that it does not re-sit on the engine walls. This will shorten the life of the oil when flushed directly. According to the instructions, it is enough to run the engine at idle speed for 10 minutes. The inert compound is safe for rubber seals.

However, ENEOS Flush oil has a strong effect on dirt, which makes it undesirable for use in old and / or very dirty engines. This is because loose dirt can clog the oil passages. It is also impossible to use this oil immediately after adding additives based on metal or ceramic complexes.

It is sold in 4 liter canisters. The price of a canister is about 800 rubles. The article is IL1341.

• Benefits:
• Short working time;
• The ability to dissolve even old dirt;
• Safety for rubber seals;
• Can be used with any type of engine.

• Disadvantages:
• High price;
• It is dangerous to use in old motors;
• A lot of fakes.

Good low viscosity oil made on mineral base. It can be used to flush not only the engine, but also the transmission. Also, due to the content of a large amount of potassium hydroxide, this drug has a high base number, about 30 mgKOH / g. This makes it possible to pour flushing even into a diesel engine running on fuel with a high sulfur content. A feature of the product is the presence of a revitalizant - a product that provides protection against wear during flushing. In addition, it contains a set of detergents, dispersants, antiwear and extreme pressure additives. It is absolutely safe for rubber seals.

Flushing oil with VeryLube revitalizant is poured into the engine or gearbox for 15 - 40 minutes of operation, depending on the degree of contamination. Due to the characteristics at which the pour point is -15 ° C, it can be used even in light frost. The manufacturer assures that due to the VitaFlush technology, the flushing lubricant eliminates the "sticking" of hydraulic lifters, oil scraper and compression rings, but this fact can be checked only after individual application.

It is realized in four possible packages - a 2 liter package, a 20 liter bucket, 60 and 200 liter drums. A two-liter package, article XB20250, costs approximately 500 rubles.

• Benefits:
• Antiwear and extreme pressure properties;
• An excellent option for flushing the diesel oil system;
• It can be used not only in the engine, but also in the transmission.

• Disadvantages:
• Long cleaning time - up to 30 ... 40 minutes;
• Quite a high price.

This mild flushing oil can be found commercially under the THK brand. The composition is universal, so it can be used for both gasoline and diesel engines, including old and very dirty ones. The composition cannot wash crystallized debris, therefore it works in a gentle mode.

The product can be used to clean the engine after working in difficult conditions, in case of overload and overheating. It can also be filled after using low-quality (or mistakenly filled) oil in the engine.

Sold in cans of 3.5 liters. The price of packaging as of the spring of 2018 is 350 rubles. Article - 40611842.

• Benefits:
• The ability to use in any motors;
• Sparing mode of operation;
• Low price.

• Disadvantages:
• Low efficiency due to its “softness”;
• It is more suitable for domestic cars than for expensive foreign cars.

Quite good domestic oil, which is intended not only for AvtoVAZ cars, but also for foreign cars. It can be conditionally attributed to the middle price class. The basis of car flushing oil is a mineral base, as well as detergent additives designed for a gentle mode to remove contaminants from the engine. Oil flushing is universal, it can be used in both gasoline and diesel engines.

According to the instructions, to achieve the effect, you need 20 minutes of quiet operation of the running engine. It is worth noting that the manufacturer does not declare anti-seize components in the composition, therefore, it does not protect against premature wear of engine parts, which once again confirms that the duration of operation and idle speed cannot be exceeded.

Packaged in 4-liter canisters, the average price of which is about 330 rubles. Article - 19465.

• Benefits:
• Versatility, for gasoline engines and diesel engines;
• Suitable for domestic and foreign machines;
• Low price.

• Disadvantages:
• Useless when heavily soiled;
• The oil is too thin;
• There is a high probability of buying a fake.

Rosneft Express RNPK

Flushing oil which is also mineral-based. With added domestic and imported cleansing and dispersing additives. What is true is the mass fraction of the purifying element - calcium is only 0.086%. Because of this, the agent cleans the surface of engine parts in a very gentle way.

Flushing is harmless to rubber and plastic parts. Flushing oil can also be used to clean the oil system of old contaminated engines. Also, they have a small amount of lubricating elements. Designed to work for 15-20 minutes.Since the pour point is only -10 ° C, it is not recommended to use this flushing lubricant in winter.

Rosneft Express has approval from AVTOVAZ. It is sold in 4 liter canisters. The corresponding price is about 400 rubles. Article - 3633688.

• Benefits:
• High efficiency in removing carbon deposits, decomposition products and dirt;
• Harmless to rubber seals;
• Relatively low price.

• Disadvantages:
• Weak lubricating properties;
• Low solidification threshold.

Another domestic development from the Yarneft trademark. The oil is made on a mineral basis using detergents. It can be used in any engines, including heavily polluted ones. More suitable for domestic cars, since it was originally developed for them. You can use it with foreign cars at your own peril and risk. It is strictly forbidden to use for flushing the checkpoint!

It is sold in cans of both 4 liters and slightly smaller ones - 3.5 (from TM Oil Right). The price for a 4-liter from the LUXE trademark, article 602 - 320 rubles, and three and a half liters, Olrytovskaya cat. number 2603 - 300 rubles.

• Benefits:
• Gentle laundering;
• Versatility;
• Low price.

• Disadvantages:
• Mediocre laundering efficiency;
• For domestic cars only.

There are several other folk remedies for flushing. One of them is banal diesel fuel, because in its flushing properties it is similar to flushing oil, the same oily and liquid. The algorithm for its use is identical. It is poured into the crankcase instead of the main oil, after which the engine idles for several minutes. In ancient times, when there were no complex flushing compositions, it was a very popular flushing tool. However ineffective as a flushing oil for a diesel enginebecause it has a composition similar to deposits.

How to use flushing oil

The unequivocal answer to the question of how to use the flushing oil is indicated directly in the instructions for it... Usually it can be read directly on the packaging or in the accompanying documentation. However, in most cases, the algorithm is the same and resembles. In general terms, the process consists in draining the old oil, pouring flushing grease instead, running the engine on it for 10-20 minutes and draining the resulting slurry.

Ideally, after draining the flushing oil, it is necessary to use a special compressor or vacuum pump, with which you can remove the remaining oil from the crankcase (usually after draining it, about 200 ... 300 grams remain).

Conclusion

Flushing oil is a very useful tool with which you can extend the life of both the engine itself and the engine oil... The flushing process is especially recommended when buying an old car, switching to a new type of oil, after significant loads on the engine, when it is heavily clogged. As for the choice of one or another oil, they are approximately the same in characteristics.

Therefore, base your choice on the ratio of price, quality and availability on the shelves. You should not neglect the reviews of various brands, because sometimes they do not always suit your particular case. And try to shop in trusted stores so as not to run into a fake product.

The need to flush the engine from old oil and contaminants arises for various reasons: for preventive purposes, when switching from one type of oil to another, in emergency situations when it was necessary to mix oils of different types and manufacturers, after significantly exceeding the recommended interval of service change, etc. ... Also, a slight overheating of the engine or its frequent operation at maximum loads can serve as a reason for flushing.

The fact is that under conditions of strong heating and tough operation, engine oil may lose its useful properties prematurely, as a result of which it is recommended to additionally clean the lubrication system before the next scheduled replacement. Next, we will look at the best way to flush the engine before changing the oil, and also answer the question of how to use engine flushing oil.

Read in this article

How to flush the engine when changing oil: diesel fuel, "five minutes", flushing or regular oil

Today there are several practical ways to flush an engine before changing lubricants. Each of them has both its advantages and certain disadvantages. Some drivers wash the engine with the so-called "five-minute", others use flushing oil, others fill in ordinary oil and simply reduce the interval of its replacement by up to two times.

There are also many car enthusiasts who never use flushing before changing the oil, and there are those who pour ordinary diesel fuel into the engine. Now let's talk about the popular flushing methods in more detail.

Flushing the engine with diesel fuel

The advantages include the fact that such cleaning is a cheap and easy option. With regard to efficiency and expediency, even many owners of domestic cars have long been skeptical about such washing, and owners of more technically complex and "capricious" foreign cars have completely bypassed such a procedure. Let's figure it out.

It is well known that diesel fuel dissolves and washes away various impurities well, and also has a certain ability to lubricate. For this reason, the use of such a flushing seems to be quite justified, since in theory it allows you to flush the channels of the engine lubrication system, remove dirt and deposits from the surfaces of parts.

In parallel with this, it should be borne in mind that diesel fuel:

• is not a special flushing agent, as a result of which the effectiveness of this method is called into question.
• partial removal of impurities after flushing the engine with diesel fuel cannot be considered sufficient for cleaning the engine.

Another disadvantage is that diesel oil can soften, but cannot dissolve deposits inside the engine. The result is that after the diesel fuel enters the sump and the deposits accumulated there soften, the latter clog the filter mesh of the oil receiver. The consequences for the engine are obvious: oil starvation, increased wear or rapid failure of the unit.

It becomes quite obvious that although diesel fuel can be used to qualitatively wash the parts of a disassembled engine, it is highly discouraged to pour it into the lubrication system before changing the oil. If you are still inclined towards this method, then the whole process of flushing the engine with diesel fuel looks like this.

1. It is necessary to prepare 5-10 liters of high-quality diesel fuel and, in some cases, about 5-7 liters of cheap engine oil (depending on the degree of contamination of the internal combustion engine). Next, you need to decide whether you will pour only diesel fuel into the engine or additionally dilute it with oil. The fact is that some drivers dilute the lubricant with diesel fuel in proportions 50/50, since they consider such a mixture to be a better option. In parallel with this, you need to purchase at least 2 oil filters. One of them may be the simplest and most affordable, since after flushing it will be replaced, that is, its further work is not planned.
2. The next step is to warm up the engine to operating temperature, after which the plug in the sump is unscrewed and the used oil is drained, the old oil filter can also be removed. Next, a new oil filter is installed, into which some fresh oil is poured. Do not screw the plug in the pallet.
3. Now, through the oil filler neck, a couple of liters of pure diesel fuel or a mixture of oil and diesel fuel can be poured abundantly into the engine, which will flow out through the drain hole in the sump.
4. Then the drain plug can be screwed on, and then add diesel fuel or a mixture of oil with diesel fuel up to the "max" mark on the dipstick. Then the motor is started for 10-15 seconds. During operation, you can slightly press the gas and raise the revs. An increase in speed leads to an increase in pressure in the lubrication system and better cleaning of channels and parts.
5. Then the engine must be turned off, and then the power plant must be allowed to cool slightly (about 2 minutes). After that, the drain plug is unscrewed, the flushing liquid is removed, a new portion is poured. The procedure is repeated several times, increasing the duration in time. Please note that during flushing at each stage, the motor must not be allowed to heat up above 50 degrees Celsius. When the temperature reaches the specified mark, the unit should be turned off immediately, giving it time to cool down.
6. The end of the procedure is the drain from the flushing system, after which the drain plug is not screwed on, since it is necessary to refill the diesel fuel into the engine and rinse the sump again.
7. When all the residues have drained off, you can screw the drain plug and fill in the cheap engine oil prepared earlier. After that, you can let the engine run for about 15-20 minutes before reaching operating temperatures, and some drivers also drive 2-3 kilometers at low and medium speeds (2500-3000 rpm). The remains of diesel fuel and loose dirt are washed off the surfaces and mixed with the filled oil.
8. Next, the specified oil must be completely drained, and also remove the oil filter. Now you can fill in normal oil and install a high-quality oil filter, that is, make a scheduled oil change in the engine.

After flushing (especially with clean diesel fuel), you should be prepared for the fact that the engine can start with great difficulty at every stage. The fact is that diesel fuel has insufficient lubricating effect, as a result of which it becomes more difficult to turn the crankshaft with the starter. This is the big minus of flushing with diesel fuel, since there is increased engine wear at each start. Also, before flushing with diesel fuel, it is advisable to recharge the battery and make sure the starter is working.

Flushing "five minutes", flushing oil and shortening the interval for changing the base lubricant

The use of special products allows you to count on the best quality of engine flushing, since such solutions contain active detergent components to remove various contaminants. There are two main types of flushing: "five minutes" and flushing oil;

The so-called "five minutes" are a detergent additive in the used oil, on which the engine runs for several minutes before changing the lubricant. The formulations are actively used during service oil changes. Their obvious disadvantages rightly include a negative effect on oil seals, seals and other elements.

Flushing oils are similar solutions that come in two types:

• the first type is a product that is poured into the motor after the mining has been completely drained. Then the unit runs for a certain time at idle speed, after which the flushing oil is drained and fresh oil is poured in. Note that such oils do not have sufficient lubricity, so they cannot be driven. To understand how much to flush the engine with this type of flushing oil, just look at the manufacturer's recommendations, which are indicated on the package.
• the second type is the less common option, when the motor is operated on flushing oil in a gentle mode (avoiding rpm above 2000 and load) for several tens of kilometers. Then the flush must be drained and filled with fresh lubricant. The composition of this type of flushing oil is usually a mineral oil adapted for short-term operation in an internal combustion engine. This wash contains a reinforced detergent package for effective cleaning. We add that although the use of this oil is the least dangerous for the engine, such products are actively being pushed out of the market by "five minutes" and other flushes, which allow removing contamination faster.

Considering the above, it is impossible to unequivocally answer the question of which flushing oil is better for a gasoline engine. A similar situation is observed in the case of a diesel engine. The general recommendation is that it is better to use more expensive and necessarily original flushing oils of well-known brands, which promise a minimum of harm to the engine.

Considering all the risks, many motorists prefer another affordable way - shortening the intervals for regular oil changes in the engine. To put it simply, high-quality oil already contains a package of detergents, which are much less aggressive to rubber and other parts of the internal combustion engine compared to special flushes, diesel fuel, etc. It turns out that it is enough to fill in good oil, on which you plan to continue driving, then drive 2-3 thousand km on it. and pour the same again.

We add that several such replacements will be enough when changing one oil to another, as well as for flushing a not heavily contaminated lubrication system, which makes it possible to do without the use of special means. The downside is that this method is quite expensive, since you will have to change the engine oil and oil filter at least twice in a short period of time.

Flushing oil for the engine. Review, reviews, prices

Do I need to flush the car engine when changing the oil? This issue is very controversial for mechanics and motorists. In today's article we will consider what are engine flushing oils, reviews of Lukoil products and much more.

Different opinions

Some motorists believe that the engine should be flushed regularly. Others are sure that there is practically no benefit from this operation, and when the old oil is drained, a new one is poured into the internal combustion engine. And immediately, without any flushing.

Opponents of flushing the engine claim that with proper operation of the car, no carbon deposits and deposits form in the engine, respectively, this operation is just a waste of money. Proponents, on the contrary, tend to believe that the quality of fuel at domestic filling stations is not the best. Therefore, engine flushing oil should be used regularly.

But what if the purchased car is no longer new?

As noted by the reviews of motorists, when buying a used car, you should immediately replace the oil in it with a new one. There are frequent cases when sellers simply ignored the fluid change interval or deliberately poured a low-quality product into the motor. By the way, experts also recommend replacing the oil filter at the same time.

Before buying such a car, you should also look at the service history or diagnose it at service stations. So, if you identify any problem, you will have a reason to bargain with the seller and bring down the price.

But let's get back to our main topic. When should you use diesel and gasoline flushing oil? We will discuss this below.

When is flushing unnecessary?

This operation should not be performed in three cases:

• If you are purchasing a brand new vehicle.
• Never pour cheap oil into the engine or you are absolutely sure of its quality.
• We are completely confident in the quality of the fuel that you buy at the gas station.

When does a car need a flush?

Everything is very simple here. Use engine flushing oil (both gasoline and diesel) when purchasing a used car. That is, when you do not know what kind of liquid the former owner poured in and at what interval he replaced them. You should also flush the engine with frequent refueling changes (for example, during long journeys). This operation is also recommended to be performed when replacing one type of oil with another. For example, if you replace synthetics with semi-synthetics or mineral water.

Thus, if one of the above cases occurs, you need to purchase engine flushing oil. The prices for it are different - from one hundred to a thousand rubles per canister. The volume of each is 4 liters on average.

How to flush?

At the moment, the shelves of car dealerships are simply overflowing with an assortment of goods, respectively, making the right choice is difficult even for an experienced motorist. What to choose for?

Standard fluids

The best option, in the opinion of motorists, would be to buy ordinary motor oil, which will last not for 15 minutes of work, but for 3-5 thousand kilometers. The essence of flushing is as follows. High-quality engine oil is poured into the car, and the motorist drives a third of the mileage indicated by the manufacturer. Thus, the fluid is able to wash away all dirt and deposits from the internal parts of the engine, including the cylinder-piston group. Moreover, such an operation does not pose any danger to the engine, since the tool does not contain aggressive potent substances. An example of this is five-minute oils. But more about them later.

The main advantage of flushing with ordinary oil is safety and efficiency. For 3 thousand kilometers, it will qualitatively free the surface of the oil channels from sludge and sediments, as well as various dirt in the area of \u200b\u200bthe oil receiver. In this case, the engine is cleaned in stages, without the risk of clogging the oil channels with deposits, as is the case with the use of more aggressive and fast-acting substances.

Well, what to do next? After draining this oil, you can safely fill in a new one. But now, not for 3 thousand kilometers, but for the entire service life. Often it is 8 thousand kilometers for diesel and 10 thousand for gasoline engines.

Alternative options

There are other cleaning methods. These products can be divided into several groups:

• Flushing liquids.
• Special oils.
• "Five-minute" type oil additives.

Let's take a look at each type separately.

Cleaning agents

Five-minute liquids

How to flush the engine with this type of flushing oil? The whole point of the application is as follows. The concentrate of detergent additives is poured into old oil before changing and works from 10 minutes to 200 kilometers. Further, the liquid is drained, and ordinary oil can be poured in its place. Everything is the same as with the flushing agents, which we talked about earlier. However, five-minute liquids are somewhat different from their safe counterparts. First of all, they are made on the basis of diesel fuel and a mixture of powerful solvents with the use of aggressive additives. The latter, judging by the reviews of motorists, do not always behave correctly during cleaning in relation to gaskets and other seals. It is also possible that the remainder of this fluid can change the composition of the new oil, which is poured after flushing the engine. As practice has shown, the volume of a five-minute liquid after draining can be about 500 milliliters.

It is worth considering that even the best engine flushing oil is capable of washing out only light fractions of slag and deposits. As for thick accumulations of paraffins and resinous deposits, they can only be removed mechanically. To do this, you must remove the engine tray and valve cover. Therefore, if you have any suspicions about the above factors, then mechanical cleaning should be done at a service station.

Mechanics recommend pouring only proven, branded oils into the engine, preferably of the highest classifications. Also pay attention to the viscosity of the fluid. For middle latitudes of Russia, products with a viscosity of 10w40 or 15w40 are suitable. It behaves well in both heat and medium frost. In order not to miscalculate with the characteristics, you should look at the recommendations of the automaker, which are in the manual. Also, due to the frequent occurrence of fakes, it will be useful to request a certificate from the seller for one or another type of oil.

Engine flushing oil: how to choose?

To do this, just look at the reviews of car owners. According to them, we have identified the top three manufacturers of engine cleaning oils:

1. Lukoil. Judging by the reviews, this tool perfectly cleans dirt and has anti-wear properties. Also, this oil has a good set of additives. Most car enthusiasts recommend using it.
2. Funds from the Tyumen Oil Company (TNK-Oil). Motorists say this oil has excellent stabilizing and dispersing properties. However, it washes away dirt much worse than Lukoil.
3. "Verilyub" (Verylub). This tool includes a whole range of additives. Among them should be noted antiwear, extreme pressure and detergent-dispersant. All of them allow you to make high-quality, fast, and most importantly, safe cleaning of the car engine.

Products of the company "Lukoil"

Now we will consider the domestic flushing oil for the Lukoil engine. This product is made on the basis of mineral oil and is a composition of highly effective cleaning additives. Judging by the reviews, washing agents of this brand have good not only detergent, but also anti-corrosion properties. It is used to clean the lubrication systems of internal combustion engines without their mechanical disassembly when changing the oil. Allows you to quickly and effectively clean the system from deposits and sludge.

How to apply?

Benefits

The manufacturer notes the following advantages of this liquid:

• Effective cleaning and removal of deposits from parts of the vehicle lubrication system.
• Reducing wear of rubbing parts of the cylinder-piston group.
• Reduced risk of engine overheating.

Also, if the flushing oil for the engine is used regularly, then the engine resource and its power will increase significantly. Recently, Lukoil flushing products have been approved by Avtovaz. Thus, the motorist does not run the risk of running into a low-quality product, harming his iron friend.

So, we found out what is engine flushing oil, how to choose it and what types it is divided into.

Flushing the engine before changing the oil: why is it necessary, how to flush

Scheduled engine oil change is a mandatory procedure that must be treated responsibly. The main thing is to first make sure whether you need to flush the engine when changing the oil, since, depending on the situation, this procedure can both help and harm.

From this article you will learn: why and when you need to flush the engine, as well as what tools you can use.

Why flush?

To understand this, you need to first figure out how the oil works in the engine. This fluid lubricates the moving parts, preventing them from rubbing against each other, and also removes various contaminants such as fuel cell residues and metal dust. The dirt is washed away and makes the oil darker and more viscous. Replacement is needed in two cases:

• The additives intended for cleaning and included in the composition of lubricants decompose quickly enough, and soon they can no longer perform their main tasks;
• 15-20% of the oil remains in closed cavities during replacement. They contain dirt and debris that are undesirable in the engine system.

With each oil change, the internal combustion engine deteriorates its performance, regardless of the quality of the mixture you use.

When should you rinse?

If the engine is running normally and the mileage after the last complete replacement is low, you can postpone this procedure for a while. But in some situations, flushing the engine before changing the oil is necessary:

• When using new grease. If you change the manufacturer or a synthetic composition to a mineral one (or vice versa), or if the viscosity and other indicators change in a new lubricant, mixing them is strictly prohibited;
• After purchasing a used car. You won't be able to find out for sure what the previous owner uploaded;
• After active use. As a result of driving fast in harsh conditions, the engine is under increased stress, and therefore the oil becomes contaminated faster;
• On turbo engines. They are very fine-tuned requiring only the finest oils to be used.

In all other situations, the question of the need for a complete cleaning of the system remains open.

What to use?

Before starting the cleaning procedure, you need to determine in advance which products to use for flushing the engine.

There are several basic formulations:

• Flushing oil. Not very useful method, since it only reduces the concentration of pollutants;
• Vacuum pump. Also not very useful, although it works fast enough. Unfortunately, this method will not cleanse hidden cavities or dissolve dirt;
• "Long-term" washing. Most effective method. Before replacing, the necessary fluid is poured into the engine, after which the car must travel 50-200 kilometers. After that, the old oil is drained - a special composition during this time will dissolve the sediments and make it easy to wash them off.

You should not save on this procedure, since the performance of the entire motor system depends on it.

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Whether or not to flush the engine before changing the oil

Disputes on the topic of whether the engine needs to be flushed before changing the oil have been going on in automotive forums for a long time, and there is still no single solution on this matter. Supporters and opponents of this procedure have their own arguments and arguments, which both justify their own opinions, so it is clearly premature to expect such a discussion to end soon.

What happens to the oil when the engine is running

When the internal combustion engine is operating, lubrication of the rubbing parts is simply necessary. In addition to lubricating rubbing parts, oil also serves to cool them. However, the loads arising during the operation of the engine - mechanical, thermal, high pressure, exposure from burnt and unburned fuel particles - lead to a loss of its characteristics by the oil, first of all, to its oxidation. Oxidation products in the form of solid deposits appear in the most unexpected places, clog a variety of gaps and oil channels, which worsens the lubrication of the engine, adversely affecting its operation.


What kind of foreign matter can appear in the engine as a result of oil oxidation?

1. Acids. The consequence of their appearance will be the corrosion of metal parts and a change in the characteristics of the oil, due to the consumption of its alkaline additives to neutralize acids.
2. Resins and resinous deposits - as a result of polymerization of unburned fuel particles and oil oxidation products.
3. Carbonaceous deposits that form on heated surfaces.

Of these, it should be noted:

• carbon deposits are the result of destruction and polymerization of oil and fuel, as a rule, it is black. Due to its formation, the temperature regime of the motor is deteriorating;
• varnish, which is a thin layer of a substance formed during the polymerization of oil on heated surfaces, most often appears on the skirt and the inner surface of the piston, pins and connecting rods. It reduces heat dissipation, which reduces the strength of parts, worsens their wettability;
• sludge, which is an emulsion formed from oil and insoluble, as well as resinous substances. It leads to an increase in its viscosity and a deterioration in lubricating characteristics.

Of course, the data presented does not cover all the processes occurring during engine operation, but they give an idea of \u200b\u200bsome of the transformations that occur during this process.

Oil change - no alternative

The oil itself is destroyed during prolonged operation in extreme conditions and needs to be replaced. It is during its replacement that motorists often have a question - is it necessary or not to flush the engine before changing the oil? It is understood that its purpose is to remove oxidation products in order to restore the original characteristics of the motor.

If no one has any objections to the issue of oil change, then flushing the engine when changing the oil is assessed extremely controversially - from complete rejection to mandatory implementation. There are also intermediate judgments and opinions that flushing can be performed not with special fluids, but using cheaper mineral oils. How can an engine flush be performed when changing the oil?

Engine flushing methods

Now there are a large number of means for flushing the internal combustion engine, and this action itself can be performed in several different ways.

Chemical

In this case, special fluids are used that contain solvents - chemicals that affect a certain type of deposits. The agent intended for cleaning is poured into the engine, and it should run for several tens of minutes (the time is set by the manufacturer of the preparation) at idle speed. After working out, everything is drained, and fresh oil is poured into the engine (along with changing the filter).

If the engine is clean enough, i.e. a similar procedure is performed regularly, then it avoids the formation of carbon deposits, as well as other deposits in the internal combustion engine. However, if the engine is too dirty (slagged), then it is possible that the accumulated deposits that have gained mobility when performing such a flushing will begin to fall off and enter the lubrication system, clogging the filter and oil lines. Even if the flushing fluid is completely drained, up to ten percent of it remains in the engine.

Gentle wash

It is carried out in much the same way, only the flushing agent is added to the lubrication system in advance, when several hundred kilometers remain before replacement. This drug is softer, has no additional effect on the oil, and the deposits dissolve gradually. However, if carrying out such a flush on a clean engine gives quite the expected result, then it is not known how this will affect a dirty engine.

Full flush

In this case, the used oil is completely drained, the flushing oil is poured, and the engine runs for several tens of minutes. After that, everything is drained, the flushing residues are forcibly removed from the engine, a new filter is installed and fresh oil is used.

Forced flushing

An external setting is used for this. The oil is drained from the engine, the filter is removed, and the motor is connected to the unit. The flushing liquid is forcedly, under air pressure, pumped through the lubrication system in the forward and reverse direction, all foreign particles are retained by the filter of the installation. The engine does not run.

After the end of the procedure, a full rinse is carried out as described above to remove the remaining cleaning liquid. As a result of such flushing, even heavily contaminated power units will be cleaned, however, the oil film on the parts will be removed, and the engine will run dry for some time.

Why rinsing is not needed

The processes taking place in the engine contribute to the formation of substances that impair the operation of the lubrication system. The consequences of such changes should be eliminated by flushing the motor. However, such an operation is met with strong opposition from many drivers for the following reasons:

• The use of flushing fluids leads to the fact that some of them remain in the lubrication system, which further causes deterioration in the properties of the oil used.
• Modern high-quality oils contain the necessary set of additives to ensure the removal of foreign substances formed during operation. The use of modern lubricants ensures regular engine operation and saves the driver from additional costs.
• It is possible to use a cheaper mineral oil for flushing, pouring it over and driving half the distance established by the regulations, and then replace it. This allows for a "soft" flushing without exposing the engine to additional loads and leaving no aggressive substances in the lubrication system. After several such procedures, you can switch to quality oil.
• A possible option is a more frequent oil change, which will avoid its oxidation during operation.

The issue of flushing the engine is quite controversial and controversial. There is no consensus among drivers and service station specialists on this matter. The fact that during the operation of the car foreign substances are formed in the engine is beyond doubt, but how to get rid of them - everyone must decide for himself.

Flushing the engine before changing the oil

Is it necessary to flush the engine before changing the oil? This question worries many, especially beginners. Also, not everyone understands the essence of flushing and the process itself. That is why we will cover all these issues in our article.

What is engine flush?

The proposal to flush the engine most often comes from car service workers to whom the driver calls in to change the oil.

And immediately a dilemma arises: to wash or not? Someone refuses without hesitation, realizing that these are unnecessary costs, someone does not see the point in this at all.

For this procedure, two methods are used:

• fill in "five minutes";
• use a special oil.

Both are a mixture of highly concentrated detergents. As a rule, the general opinion is more inclined towards the second method, considering it more gentle. Rinsing is carried out quite quickly, since detergents only work for a few minutes, and a longer procedure can be harmful.

There is one more way, we will talk about it later, it is called manual flushing.

What is flushing for?

There are a number of reasons why you need to flush the engine. This is justified in these cases:

• when switching from one engine oil to another in the case when it did not fit;
• if the driver recently bought a car and does not know what is in the engine;
• when changing the viscosity or type of oil;
• if the engine is clogged or has been previously repaired.

Flushing methods and step by step plan

So, we have previously discussed three ways to flush the engine. The driver will have to make a choice between them on their own based on the information studied. You do not need to flush without a good reason.

The oils already contain detergent additives that work for the benefit of the motor. If the car owner uses a high-quality oil of the desired viscosity recommended by the car manufacturer, he will not face any problems.

Manually

The first method is manual flushing. Its principle is to completely disassemble the motor and rinse the parts yourself. You will need:

1. Warm, bright garage.
2. A specialist if you have no experience and knowledge.
3. Set of tools.
4. Rags.
5. Solvent, diesel fuel or kerosene.

This method is laborious and requires certain knowledge that will be useful when disassembling and assembling the motor. It is not recommended for a person without experience to do this.

It is better to carry out this procedure together with a specialist. He will additionally diagnose an already clean engine.

With flushing oils

Flushing oils are one of the most gentle ways to clean the engine. They are not as aggressive as the popularly known "five-minute", and act just as quickly.

You don't have to disassemble the motor. The sequence of actions is as follows:

1. The old oil is drained.
2. The flushing motor is poured into the motor, where it “works” for no more than 10 minutes, performing its functions.
3. The flushing mixture is drained.
4. Now you can fill in new oil.

What is this product? Most often, its composition is simple: it is based on the simplest mineral oil, and additives are detergents in an increased concentration. This method is quite popular in Russia and on its basis another one was invented: flushing not with special oil, but with what will be flooded.

It is used for a short period of time (about 2-3 days), then it is drained and new is poured in. This method is considered as mild as possible, but the effect with heavy dirt will not justify expectations.

Five-minute washings

Nobody hides that this method is the most aggressive of all. The composition of the product consists of several high concentration detergents. Overexposing the product can damage internal parts.

The use of "five minutes" in Russia is not so common, however, they are actively offered to car owners and advised to use them independently.

Working with them is quite simple:

1. The agent is poured into the old oil.
2. The waiting time should be seen on the package (usually it is a few minutes).
3. Now everything merges with the old oil.
4. You can fill in new oil. The vehicle is now ready for use.

When is flushing harmful?

Any flushing of such a serious unit as an engine is best done in the presence of a specialist. He can carry out diagnostics and help in case of problems.

So, the actual harm of flushing consists in the frequency of its use, which is completely unjustified. Earlier, we identified the reasons when flushing the engine once is the norm, but doing it from time to time without objective reasons is at least stupid.

As for the harm of that very "five-minute", it is significantly exaggerated. Sometimes you can read that the product "eats" the metal and clogs the filter. It is not true. They work aggressively, but following the instructions there are no increased risks.

Another argument in favor of safety is the presence of "five minutes" in the line of products from the manufacturers of motor oils themselves. Moreover, these are world-renowned brands that conduct analyzes and research the substances used.

Here are some practical tips for those in doubt:

• you should not prescribe flushing yourself, let a specialist do it and explain to the car owner why it is needed;
• when unscrewing the cover, the engine will be either dirty or clean, in the latter case it is a waste of money;
• change the oil on time, pay attention to what is recommended by the manufacturer for a particular engine - this is the key to excellent engine performance.

So, we found out that flushing the engine is carried out in case of emergency. This is not always a laborious process, but it is better to do it only on the advice of a specialist, as well as in his presence. Well, the guarantee of the excellent work of the "heart" of the car will be high-quality oil, selected according to the rules, and not contrary to them.