The duration of the uninterrupted operation of the vehicle units depends mainly on the intensity of operation and the timely maintenance of each of the nodes. For example, transmission maintenance operations are usually limited to the question of when to change the oil in the gearbox.

For manual transmissions, this parameter is less painful than for other types of gearboxes: automatic and variator. After all, there are cars in which manufacturers pour oil into the transmission at the factory and do not regulate its further replacement.

Content

• 1 Used foreign car
• 2 The frequency of changing the oil in the automatic transmission
• 3 At what time to carry out an oil change in gearbox
• 4 The frequency of changing the oil in the manual transmission
• 5 Proper selection of oil for transmission
• 6 Conclusion

Used foreign car

There is an almost unambiguous criterion by which you can navigate when changing the oil in an automatic transmission. This is buying a used foreign car with decent mileage in our country. Such a vehicle requires close attention and the desired replacement of all lubricating fluids in a car.

On updating the engine oil, most drivers remember, but topping up or replacing transmission fluid is carried out less frequently. Therefore, the friction parts in the box can wear out more quickly after the development of lubrication life, the development of most of the additives or leakage of lubricating fluid.

The frequency of changing the oil in the automatic transmission

Manufacturers set this parameter for each model of the unit individually. It can be found either on the official website of the company, or from the instruction manual for cars. For example, the company Toyota for both types of transmission and automatic and mechanical set a twenty-thousand milestone before replacing the transmission fluid in the box. Such a replacement frequency is recommended for domestic drivers, since the climate in Russia is equal to the harsh operating conditions. But much more often you can find the replacement interval in the range of 40-60 thousand kilometers.

See also: How does the differential car

It is recommended to remove and wash the pan, clean the strainer, release the magnets on the pan from the collected metal particles. That is, a partial oil change. Such actions are sure to increase the smoothness of gear shifting and their correct choice by “automatic”.

What time to carry out an oil change in gearbox

In addition to the recommended interval for changing the oil, it is necessary to focus on the state of the unit, its efficiency. During the rotation of the gears, moisture or condensate formed in the oil, as well as small metal particles.

Such a decrease in the quality of the lubricating fluid can lead to the appearance of extraneous sounds during gear changes. Gnash, hum or other extraneous noise during the work of the checkpoint should alert the driver.

Quality control and oil level

To ensure the quality of this fluid you can use the probe. The apparent blackening and characteristic smells of burnt grease must become an incentive to replace the spent fluid, even if the timing for changing the oil in the gearbox “by mileage” has not yet come.

The frequency of changing the oil in the manual transmission

The question most often interests owners of classic models of VAZ. Usually the drivers of these cars prefer to top up to the working level in the box (the lower part of the “eye”). Although the replacement will be enough volume of about one and a half liters.

Tanks with gear oil

If you change, then the interval is the mileage of 50-60 thousand. Km. For replacement use semi-synthetic oil or synthetic. It is necessary to choose liquid taking into account climatic conditions of operation. For example, for a midland with a frosty climate, Shell 75W90 will do.

Correct selection of oil for transmission

In addition, to find out how often to change the oil in the gearbox, you must also decide on the type of fluid to be replaced.

You need to know that in the gearbox you need to fill only the special gear oil.

It is possible to distinguish its marking by abbreviations ATF (automatic boxes) and MTF (mechanical boxes). Both "lines" are widely represented by various manufacturing companies.

Having added oil to the transmission

1. Mineral oil most in demand for low-speed gearboxes. The friction forces are not too large, and the speed is limited to 2-3 thousand per minute. This is the cheapest type of oil, which is most often used on rear-wheel drive cars. It quickly loses its properties, so its resource falls to 30-40 thousand kilometers.
2. Semi-synthetic oil suitable for high-speed gearbox and machines with significant power load. The average speed in such a unit usually reaches 3-4 thousand per minute. These are cars with front-wheel drive and low cost. The fluid is diluted with additives to improve chemical properties and fight against corrosion. The replacement interval for such a liquid is longer than that of mineral water, and tends to 40-50 thousand kilometers.
3. Synthetic oil is the most expensive option for transmission fluids. However, its cost is offset by rather high performance. It is mainly used in automatic transmissions. Manufacturers add to the liquid a large number of quality additives, which are enough for a long service life. It can be an average of 60-70 thousand kilometers for mechanics, and for a more “automaton” saturated with details, the resource is often limited to 50 thousand kilometers.

See also: How does the variator

Conclusion

Update transmission oil must be changed based on the age of the car, its mileage, intensity of operation, type of car and gearbox. In the process of replacing the need to focus on the recommendations of the automotive company.