If the car enthusiast does not like to dig into the insides of the car or he lacks experience, we recommend changing the oil in the checkpoint at a service station. Below we will look at ways self replacement transmission fluids for manual and automatic transmissions.

Algorithm for complete oil change in mechanical box gear:

• We warm up the oil in the checkpoint, having driven 5-10 km by car, so that it becomes liquid from a thick one, suitable for draining;

• We install the car on a lift or a viewing hole. Setting up the draining machine transmission fluid should be carried out no later than 10-15 minutes after stopping the engine, otherwise the oil will thicken again;

• Remove the engine crankcase protection (if any). Unscrew the plug control hole, through which the transmission fluid level can be measured. At the same time, we check whether it is necessary to change the gasket on this cover. If the mileage of the car is high or it was operated in difficult conditions, then this gasket (O-ring) is probably worn out and will require replacement;

• We open the drain hole located in the gearbox housing and drain the oil into a previously prepared container (you can use an old engine oil canister by installing a funnel in its neck). When the transmission fluid is drained, screw the cover drain hole;

• Using Janet's medical syringe, we collect new oil and pour it into the oil filler neck. Important: the filling level of the transmission fluid should not be higher than the lower edge of the inspection hole. If oil begins to drip from this hole, stop filling.

• We tighten the oil filler cap. We install the crankcase protection in place. We start the engine and drive several kilometers in different speed modes, allowing new oil to fill the gearbox mechanisms. We check the level of the transmission fluid, add the required amount if necessary.

Algorithm for complete replacement of transmission fluid in automatic box gear:

• Preparatory stage - warming up the fluid in the box when driving 5-10 km, installing the car on the inspection pit / lift, removing the crankcase protection;

• We substitute a container under the lower part of the gearbox (the volume of the container is at least 5 liters), unscrew the plug on the automatic transmission pallet, drain the working transmission fluid;

• Unscrew the automatic transmission filter mounts, remove the valve body, drain the remaining oil from these parts;

• To make the fluid drain faster, we move the automatic transmission selector with the engine off to the positions from Parking to Drive and back. It is recommended to repeat these steps 2-3 times. Then we carry out the same operation with a running motor - this is sometimes done to completely remove the residual waste fluid from the box.

Important: engine running time when draining spent ATF - no more than 1 minute. The longer the engine runs, the more likely it is that the pump that drives fluid through the gearbox may break;

• If the filter cells are moderately dirty, it can be washed with gasoline or white spirit, then dried and reinstalled. If the filter is very dirty, we recommend installing a new filter element. Then we mount the valve body with a new filter in place;

• We install the automatic transmission pan in place, having previously replaced its gasket;

• Through the oil filler hole located in engine compartment, having previously removed the measuring probe, using a Janet syringe or a watering can with a special nozzle, pour in 3-4 liters of transmission fluid;

• We start the car engine and move the automatic transmission lever to the positions from Parking to Drive and back. This is necessary to run the new ATF through all gearbox assemblies;

• We check the level of the transmission fluid with a dipstick (its volume for each individual gearbox can be found in the vehicle manual). This must be done with the engine running with the automatic transmission handle transferred to neutral. If necessary, add a liter of oil and warm up the car engine to working temperature... Measure the automatic transmission oil level again.

Important: there are two marks on the dipstick - Cold (oil level to “cold”) and Hot (liquid level to “hot”). The transmission is considered to be fully filled with transmission fluid when the level reaches the maximum Hot level.

• Install the dipstick in place. The transmission fluid has been completely replaced.

From premature destruction, wear and deformation. Timely oil change in manual transmission minimizes the likelihood of mutual sintering of moving metal elements. To find out what kind of oil you need to fill in the gearbox of a particular car, you need to read the operating instructions. This document contains comprehensive information on the correct grade of industrial oil, as well as the timing of the service lubricant change.

The main role of oil in the gearbox

Each unit of the mechanical transmission, running gear works without failures, thanks to the excellent interaction of the mating elements. Gearbox oil is designed to provide reliable adhesion between the metal surfaces of working machinery parts.

Working in high temperature conditions, the gear teeth of the gearbox quickly wear out, lose strength, and the likelihood of tooth breakage increases sharply. In this case, it may be necessary to radically change the gearbox.

Manual transmission oil is a viscous lubricant. In contact with metal parts, lubricant molecules envelop the rubbing surfaces of the mechanisms. A unique protective layer is formed on the mating elements. When the gear teeth are engaged, due to the oil film:

• no scoring and cracks are formed;
• smooth reliable grip is provided;
• the efficiency of the gearbox increases;
• the service life of the vehicle transmission increases.

The use of gear lubricants does not lead to a deterioration in strength, technical and performance characteristics internal mechanisms of the manual transmission.

Types of transmission fluids

Car owners who use the services of service companies often do not know what kind of oil is poured into the gearbox of service station mechanics.

To add oil to a classic gearbox, it is recommended to use a special high quality synthetic, semi-synthetic or mineral lubricant.

To find out what kind of oil to fill the box, such indicators as the relative sliding speed at the point of engagement and the unit loads acting on the transmission are determined. Based on the data obtained, oils are selected that differ in the degree of viscosity, the amount and quality of additives. Depending on the chemical composition of the oil, additives can be either mineral or synthetic.

What oil is best for manual transmission

The use of a certain brand of oil relieves car owners from the need overhaul or replacing a manual transmission. In terms of technical characteristics and purpose, transmission fluids are very similar to engine oils... A natural question arises, is it possible or necessary to fill the gearbox with a lubricant intended for power units.

Experienced auto mechanics and official representatives of manufacturing plants do not give definite answers yet. However, they do not deny that in emergency situations you can pour engine oil into the manual transmission gearbox. Especially if the vehicle is equipped with front-wheel drive (gear power unit on the front axle). This is due to the unique cylindrical design of the gears in the manual transmission of front-wheel drive vehicles.

Separation of oils for manual transmissions by viscosity

The main difference lubricants for gearboxes from engine ones - an indicator of oil viscosity. Even visually, they can be distinguished by their density: the lubricant for engines is more liquid and fluid. Viscosity grade transmission substances much higher than motor counterparts. Before refueling the manual transmission with oil released for the internal combustion engine, it is recommended to check how permissible such an alternative is and how this will affect technical characteristics the vehicle as a whole.
Engine oils are more affordable at a price, however, if you pour engine oil into the box, which is incorrectly selected, the probability of irreversible processes increases. Repairing a destroyed gearbox will cost the owner a lot.

If there is not enough oil, the manual transmission will completely fail. In order to prevent an emergency situation, costly overhaul of the car, it is recommended to check the oil level in a timely manner. The first signs of a leak are oil leaks on the gearbox crankcase. If defects are found, wear of gaskets, oil seals, you need to urgently replace them with new parts.

Oil change interval in manual transmission

The car service book contains detailed instructions, in the gearbox. The automaker describes in detail when and how many kilometers to carry out full replacement oils. For old used cars, the interval between the next grease change is two to three years or 30 to 40 thousand kilometers. Modern expensive cars need this operation much less often.

Changing the oil in a manual transmission

It is recommended to use only new lubricant for changing the oil in the manual transmission. This is the key to the reliability and durability of the vehicle transmission. Before changing the oil in the gearbox, you need to put the car on an overpass or place its front part above a special inspection pit, where free access will be provided. This is due to the inconvenient location of the box and drain plug - under the bottom of the machine.

Experienced auto mechanics advise you to drain the obsolete oil immediately after the vehicle is driven. In this case, the heated grease flows down the inner walls of the crankcase faster, changing the oil in the gearbox will be much easier and faster.

Description of the oil change process:

• after installation on an overpass, you need to put the car on the hand brake or support the wheels with special brake stops;
• clean the plugs of three holes from the dirt - drain, filler, breather;
• substitute a container for collecting used oil under the bottom of the machine;
• unscrew the plugs of holes (drain and filler) - this will speed up the process of oil leakage;
• while the old lubricant is running out, you need to prepare a watering can, an elastic hose of a suitable diameter, through which oil is poured into the gearbox;
• manually remove the accumulated debris from the box;
• clean the special magnet from metal shavings and other gear wear elements;
• insert one end of the plastic tube into the filler neck;
• pour the prepared oil into the gearbox housing;
• if it turned out to be small, it is necessary to top up the missing amount of oil; it is added to the gearbox, while, as soon as the required control level
• the hole is reached, excess oil will begin to flow out of it;
• screw the filler neck with the appropriate cap;

Before installing the plugs on the drain and filler holes, you need to inspect the sealing elements for the formation of breaks, cracks and other deformations on them. If necessary, they should be replaced with new rings.

Before using the vehicle, it is recommended to visually inspect the vehicle and the parking area. If drips and oil stains are found on the floor under the bottom, check the oil level in the manual transmission. Even a small reduction in the volume of oil can lead to intensive wear of the gears, followed by serious repairs to the transmission and the car as a whole.

One of the basic rules for changing oils and operating manual transmissions states that the timely installation of new gaskets, oil seals instead of worn ones can help eliminate oil loss, and also prevent breakdowns and wear of gears.

Each vehicle shows different results for filled oils. For some, only synthetics are needed, while others work normally on cheap mineral water. Most often, drivers choose the middle ground: semi-synthetics. The most important condition is the preservation of stability of operation, as well as the technical, operational characteristics of the vehicle over a long period.

Changing the oil in the gearbox is enough important process in the operation and maintenance of cars. Without it, it can become unusable, which will lead to a replacement. The article will tell you about what a checkpoint is, why it is needed, replacement technologies and recommendations of manufacturers.

What is a gearbox?

A gearbox, or gearbox, is a car's transmission mechanism that changes the frequency and torque on the driving wheels. There are mechanical, automatic and variator gearboxes.

To date, none vehicle cannot do without a checkpoint. Therefore, all machines are equipped with this unit.

Why do I need to replace the oil at the checkpoint?

In any list of manufacturer's recommendations there is an item: oil change in the gearbox. Why is this needed? The main task of the transmission is to lubricate the gearbox parts. Due to the fact that it also serves as a heat sink from the gears that are heated, the oil can lose its properties.

When heated, the oil foams and loses its chemical composition, and, accordingly, its main purpose is to lubricate parts. This is perhaps the main reason for the periodic replacement of the oil in the box. Even special additives and additional cooling radiators do not save from this.

Types of oil that are filled in the gearbox

There are three types:

1. mineral - for the cheapest cars;
2. semi-synthetic - for middle class cars;
3. synthetic - for more expensive cars.

Basically all oils are indexed. So, transmission lubricants
have the following indexes: 75W-85, 80W-85, 80W-90, 75W-90 and others similar.

Usually car manufacturers write which oil should be put into a manual (automatic) transmission and which manufacturer. And the manufacturer of the grease indicates where it can be applied, index, type and other detailed information.

Replacement technology in a mechanical box

In order to change the oil in a mechanical box, a certain tool and conditions are required. Have different cars different arrangement of the drive, and, accordingly, the transmission. Therefore, the oil in the gearbox changes at different
cars in different ways. Consider the basic principles of replacement in a mechanical box:

• drive the vehicle to where there will be access to it from below. For this, a pit, a lift, etc .;
• allow parts and oils to cool;
• unscrew drain plug, which is located at the bottom of the gearbox, before placing a container where the oil will drain;
• wait for the oil to run away;
• clean the threads from dust and dirt both on the plug and on the unit;
• tighten the plug, not forgetting to put the copper or rubber seal ring;
• unscrew the top plug where the oil is filled;
• clean the threads and around the hole from dust and dirt;
• fill in a new transmission;
• tighten the plug.

How much oil do you need to fill in a manual transmission?

On different cars, this amount can be different, from 0.6 to 2.5 liters. You should look at the technical documentation provided by the manufacturer.

Replacement technology in an automatic box

There are 2 ways to replace the automatic transmission.

First way:

• unscrew the drain plug and the oil will flow out by itself;
• then remove the gearbox oil element (filter) and wash or replace it;
• screw on the drain plug and unscrew the filler;
• pour the required amount of oil;
• tighten the filler plug.

Method two:

• disconnect the pipe that connects the automatic transmission and the radiator;
• we put the pipes of the oil change device;
• starting the internal combustion engine and apparatus;
• complete draining of our lubricant;
• pour a new one through the filler channel, before unscrewing the plug.

How much oil do you need to fill in an automatic transmission?

Depending on the car and the type of automatic transmission, it is necessary to fill in from 1.4 to 1.9 liters of transmission. It is recommended to fill in the lubricant recommended by the manufacturer. In other cases, the wear of the parts itself may increase.
boxes.

Oil change technology on trucks

Unlike passenger cars, on trucks and tractors, the replacement is different.

1. There are two plums and two holes for the bay as standard.
2. The oil changes for three to four hours.
3. The volume of grease absorbed by the giant is 5.6 to 8 liters.
4. All operations are carried out only cold.
5. The gear must be in neutral.
6. Oil change takes place every 100 thousand kilometers.

Trucks travel more kilometers than cars, so their oil needs to be changed more often, and since the volume is large, the price is higher.

Replacement timing for different types of cars

There are different transmission oil change times for different vehicles. It depends on many factors, such as:

• gearbox type;
• number of gear steps;
• type of car;
• the type of oil poured into the box.

When should you change the oil in a car gearbox?

The lubricant in the vehicle gearbox should be changed in accordance with the manufacturer's scheduled maintenance. This data is usually written in the service book and must be strictly adhered to.

According to the standard, in a mechanical box, the oil changes every 40-50 thousand kilometers, in an automatic box - 60,000 km. The exception is constant intensive driving - gas / brake. In this case, the oil should be changed by 2/3 of the
term.

The Association of Automobile Manufacturers, Automotive Experts in Repair and Operation and Representatives of Repair Bases (STO) held a forum in 2015, one point of which was the change of lubricant in different types boxes
gear.

During the discussion, general rules were established for how long it takes to change the oil in the gearbox:

• passenger cars with a volume of up to 2.5 liters - every 25-30 thousand km;
• passenger cars with a volume of 2.5 to 5.0 liters - every 30-35 thousand km;
• passenger cars with a volume of more than 5.0 liters - after 40 thousand kilometers;
• trucks up to 10 tons - every 70,000-80,000 km;
• trucks over 10 tons - after 100,000 km.

What should not be done during transmission maintenance?

• avoid getting dirt and dust into the new oil and the box itself;
• avoid hitting third-party objects;
• do not push in objects to clean the drain channel, this may damage the box and render some parts unusable, or part of the object may remain inside;
• do not avoid security measures;
• adhere to the prescribed sequence of actions.

Interesting fact

Some car owners, in order not to change the oil, or when the box wedges, throw a roll of toilet paper into the checkpoint before selling the car. This method helps to drive, the gearbox behaves well, smoothly and easily changes gears, but this is only for a few days.

Motorists often try to change the oil in the engine on time, but forget that the gearbox also contains grease, which wears out over time. How often is an oil change required in a mechanical box, and what kind of lubricant is it better to fill there? You can find all the information for yourself from this article.

1 Why change the lubricant in the box - a good reason

The oil in the transmission does not come into contact with combustion products, as in the engine, therefore it needs to be replaced much less often. But this does not mean that it does not need to be changed at all. The fact is that grease wear still occurs for several reasons:

• wear products of parts mix with oil, as a result of which the liquid becomes contaminated, and oil channels begin to clog. Therefore, the wear of the manual transmission occurs at an accelerated rate;
• since it is impossible to ensure perfect tightness of the mechanism, water accumulates in the lubricant over time;
• as a result of frequent thermal exposure, the oil loses its properties;
• additives that provide lubrication with certain qualities have their own service life, at the end of which they cease to perform their function.

Therefore, as in the case of the engine, from timely replacement the durability of the manual transmission directly depends on the oil. But why, in this case, the manufacturers of some foreign car brands say that the oil in the box is filled for the entire life of the car? The thing is that in many Western countries the service life of the car corresponds to the warranty period, i.e. is 5-7 years or 150 thousand km. After that, it is assumed that the owner of the car hands it over for liquidation and buys a new one.

The gearbox of a car can really work 150 thousand kilometers without changing the oil, however, pretty much worn out at the same time. But her condition at the end warranty period already interests nobody. It should also be noted that some automakers, in particular, "sin" with this Mercedes, unreasonably overestimate the vehicle's mileage before oil change. Practice has shown that this marketing move leads to faster wear of the transmission. As they say - miracles do not happen, and if you are not going to just throw the car away five years after purchase, you must adhere to the general recommendations regarding changing the oil in a manual transmission, and not trust the service books.

2 How often to replace - you won't spoil the box with oil

Car manufacturers in service books usually indicate the frequency of oil changes of 30-70 thousand km, depending on the car model. However, it should be understood that the life of a transmission oil may not always be the same, as it depends on various factors. Listed below are all situations in which the fluid change interval should be kept to a minimum:

• the car is operated in a dynamic driving mode - this driving style is characterized by fast acceleration and sharp braking;
• the car is used in a metropolis, as a result of which driving occurs with constant starting and stopping;
• the machine is used in mountainous areas;
• the car drives at extreme temperatures, such as frost below -20 degrees or heat above +30 degrees;
• your car is more than seven to eight years old;
• the car is often used in off-road conditions, i.e. you have to ride in mud, sand or snow;
• the car is used loaded or with a trailer;
• filled in the box mineral oilwhich has a shorter lifespan than semi-synthetic or synthetic.

In all of the above cases, the gearbox mechanisms are exposed to increased stress, and the oil wear increases accordingly. Therefore, it should be changed at least every 30 thousand kilometers.

There are also situations when it is necessary to change the oil in the box immediately:

• you have purchased a used car with an unknown service history, however, in this case, you can first check the wear of the fluid so as not to change it in vain;
• the grease has worked in the box for more than three years, and it does not matter how long the car has run since the last replacement.

In other cases, the oil can be changed every 60–70 thousand kilometers, but not later. Even if the oil has a high-quality base, for example, synthetic, do not forget about mechanical contamination of the lubricant.

3 How to check a liquid - is it necessary to update?

If for some reason you do not know how long the oil has been in use or have doubted its quality, the liquid can be checked by examining it visually. It is quite simple to do this - you just need to unscrew the plug so that the grease begins to drip or drain in a thin stream, and substitute a clean napkin. To prevent the liquid from mixing with dirt on the surface of the plug and crankcase, thoroughly wash the area around the drain hole first.

Then carefully inspect the lubricating wipe. First of all, pay attention to transparency. If the napkin is clearly visible under a drop of oil, i.e. is not painted over, which means that the lubricant can still serve, while its color does not matter. If the fluid is cloudy, it must be replaced. The worst case scenario is if you notice metal shavings. Its presence indicates that there is severe wear of parts in the gearbox, and soon it will fail. As a rule, the oil in such a situation can have a pungent burning smell.

To make sure that the box is in poor condition, you need to drain the fluid and dismantle the crankcase cover. If its inner surface is clean, then there are no serious problems with the transmission. If there are deposits of metal chips, you must contact the service center.

4 Which composition to use - mineral or synthetic?

Transmission oils, like engine oils, differ primarily in the base. The cheapest are mineral compositions, which are extremely rare lately. They are usually poured into cheap rear wheel drive vehicles. The main disadvantage of these liquids is that they wear out rather quickly and do not have the property of self-cleaning. Therefore, if the mineral lubricant is not changed in time, deposits will form on the surface of the parts.

IN modern cars economy class with front-wheel drive are used semi-synthetic oils... Under normal conditions, they retain their properties for 50-60 thousand kilometers. Thanks to additives, these compounds protect gears from wear well. Another advantage of semi-synthetic lubricants is their relatively low cost. Therefore, they are very popular.

The most expensive and high quality is synthetic oil... It is the most stable in terms of viscosity, it tolerates extremely low and high temperatures. Therefore, synthetic lubricant can be recommended for residents of northern and southern regions. In addition, these formulations have good self-cleaning ability and durability. True, their cost is much higher than that of semi-synthetic analogues.

I must say that high-quality "semi-synthetics", for example, brands such as Esso or Mobil 1, due to additives it is very close to "synthetics". Therefore, if you do not plan to operate the car in extreme conditions, it does not always make sense to overpay for a synthetic base. In addition to the base, transmission fluid is viscous. Therefore, there are oils on sale for mechanical and automatic transmissions. As you might guess, it is impossible to fill in mechanical boxes with oils intended for "automatic machines", and vice versa.

5 Liquid replacement technology - what is its specificity?

Changing the oil in the manual transmission is quite simple - you need to unscrew the drain hole, wait for the liquid to drain completely, then screw it on and pour oil into the filler hole. Since the drain port is usually difficult to access, a large syringe or tubing with a watering can should be used to fill in new fluid. In this case, the tube is inserted into the hole on the side of the hood.

At each oil change, it is advisable to change the crankcase cover gasket, which will ensure good tightness of the unit, which means that the grease life will also increase. In addition, the lid itself must be cleaned from mechanical contamination.

At first glance, the procedure is quite simple, but it also has some of its own nuances. Please note that liquids must not be poured into the box, like the engine. different types and even different manufacturers... You can find out which oil is poured into the transmission by the manufacturer from the service book. If a service book lost, you cannot find "native" oil on sale or you just want to change the type of lubricant, it is imperative to flush the box, since it is impossible to completely drain the old fluid.

For these purposes, a special flushing fluid is used, on which the car must travel several tens of kilometers in the running-in mode, i.e. without much stress. Then flushing fluid is drained and replaced with grease, which you are going to constantly use in the transmission. I must say that after flushing, it is advisable to change the liquid as soon as possible, i.e. thousand in 25-30, since the liquid will still mix with the remnants of the flushing oil.

Summing up, we note that any mechanism that has rubbing parts, especially as complex as a gearbox, needs high-quality lubrication. Therefore, if you want the transmission to last a long time and not fail at the most inopportune moment, do not try to save on the quality of the oil and the frequency of its replacement.

Good day, dear motorists! Changing the oil in the gearbox is a serious and responsible question. We always have two options for action: either change the oil in the box with our own hands, or turn to the services of a car service.

The technology of changing the oil in a manual transmission or transmission fluid in an automatic transmission does not represent any special "wisdom". You just need to know. And, if you have half an hour of free time, oil in the gearbox and desire, then change the oil yourself.

What should be done to extend the life of a transmission?

Like any mechanism in which rubbing parts are used intensively, mechanical and automatic transmissions equally require attention and timely maintenance. Especially with regard to the lubricant.

How can you extend the life of the gearbox on your own?

• if you have not a tuned car, but an ordinary standard copy, then the operation of the car should take place in a standard mode. Smooth acceleration, standard braking, economical (cruising) speed mode within 100-120 km / h. - this will by default increase the life of the gearbox;
• : in a manual gearbox - smooth shifting clutch, in an automatic gearbox - following the rules for shifting the selector;
• check how much oil is in the gearbox every 10,000 km, contrary to sometimes sounding opinions that an oil change is not required at all in the gearbox. Traditionally, in manual transmissions, the oil level should be at the lower edge of the oil filler neck, in automatic transmissions, according to the indicator on the dipstick. The volume of oil or transmission fluid must be indicated in the manual for each gearbox model individually;
• pour oil into a manual transmission, and oil into an automatic transmission, only recommended by the manufacturer, or its analogues. By the way, do not forget that the automatic transmission is not filled with oil, but a special transmission fluid with the abbreviation ATF (automatic transmission fluid)
• observe the timing for changing the oil in the gearbox, which, as a rule, are indicated in the manuals of your car models. If there are no numbers, then it is recommended to change the oil in the gearbox: manual transmission - 100,000 km. mileage or every seven years, automatic transmission - 90,000 km. run or every six years. Whichever comes first.
• systematically monitor whether there is an oil stain or oil drops under your car. This is a signal for the need for a serious checkpoint diagnosis.

How to change the oil in a manual transmission?

We need a lift, although where is it from in the garage. Then the repair (inspection) pit or overpass. Standard set of tools, containers for draining waste oil and a syringe, because from the standard container transmission oil pouring will not work.

All this is there, then let's start:

• before setting up a car to change the oil at the checkpoint, you need to make a small “march”, about 10-20 km, in order for the oil to warm up and have fluidity. After the trip, the oil change should be started within 10-15 minutes;
• we install the car on the pit;
• unscrew the oil filler cap in order to make it easier to drain the oil, by the way, immediately check the condition of the O-ring on the cover. Replace it if necessary;
• unscrew the drain plug and drain the oil into a container;
• we wrap the drain hole;
• pour oil into the oil filler hole with a syringe to the level of its lower edge;
• wrap the oil filler plug. That's probably all.

How to change the oil in an automatic transmission?

When changing the transmission fluid in, the initial steps and tools are the same as when changing the oil in the gearbox. After installing the car on the pit:

• disconnect the supply hose from the automatic transmission fluid cooling radiator fitting.
• we lower the hose into a previously prepared container with a volume of at least 5 liters;
• we start the engine with the selector lever "N" and drain the working fluid. When draining, the engine can run for no more than one minute. Otherwise, the transmission pump may be damaged;
• We turn off the engine;
• unscrew the drain plug and drain the remaining transmission fluid from the box;
• we wrap the drain plug, fill with a syringe with fresh working fluid into the filling hole at the top of the box crankcase. Fill in 5.5 liters. Having previously removed the liquid level indicator;
• then, with a syringe, through the supply hose, fill in 2 liters of liquid;
• we start the engine, and drain 3.5 liters of fluid through the hose;
• We "turn off" the engine and re-fill it through the hose 3.5 liters;
• we continue the last two operations until a liquid in a volume of 8 liters flows out of the hose;
• then pour the working fluid into the box in the amount specified by the manufacturer.

Important! Do not fill in transmission fluid "in reserve". The automatic transmission must be filled with exactly as much working fluid as indicated in the service manual. No more, no less.

Then check the transmission fluid level. There is a mark on the level gauge. Then take a short ride and check the fluid level again. Accordingly, the liquid must be level. Top up if necessary.

Good luck with changing the gearbox oil with your own hands.