Changing gear oil is no less important than changing engine oil, especially for cars with manual gearboxes. This consumable is a special formulation that creates a protective film that withstands incredible loads during contact with parts. Transmission oils also dampen the impact loads on the gears, reducing noise and vibration in all transmissions. The oil is also designed to dissipate excess heat from surfaces that come into contact with each other, releasing excess energy. Carefully lubricated mechanisms reduce friction energy consumption.
We would like to say that the transmission oil change procedure should be carried out either on the lift or in the garage pit, and if there are no such options, then you can use jacks. In addition, you should have a syringe to fill the new oil (because from the standard container to do this will not work) and a container for the drain of waste material.
Provided that the car has a manual gearbox, you need to act as follows:
- At first, it is necessary to drive about 20 km that the old oil was warmed up enough for achievement by it of necessary level of fluidity. In this condition, it will be much easier to drain the waste material.
- Do not use the car for about 15 minutes, not longer. Place the car in one of the positions specified above in this section.
- Now we will figure out where to fill the transmission oil. Unscrew the oil filler cap. This will facilitate the whole process. Check the condition of the o-ring on the cover immediately. If necessary, replace it too. Next, very carefully unscrew the cap that is on the drain hole and drain the old oil that has already been used up. Screw the drain plug back in, take a syringe and pump in the required amount of consumables. Screw on the cover.
Let's talk about how to fill the transmission oil in the transmission. As for the automatic transmission, the initial preparation steps and the tool will be similar to the mechanical gearbox. The difference will only start after the car is installed above the inspection pit. Disconnect the supply hose from the radiator connection and lower it into a container with a volume of no more than five liters. Start the engine in neutral gear. The bath fluid will drain out. In this mode, it must not run for more than 60 seconds. Then unscrew the drain cover and drain any residual material. Screw-in the cover and fill the filling hole on the crankcase with 5.5 liters of new material. Next, use a syringe to feed two liters of fluid through the supply hose. Start the power pack again and drain 3.5 liters of transmission oil through the hose. Switch off the motor and fill in the same amount of material again via the hose. Carry out the last two operations until 8 liters of liquid are poured out through the supply hose. At the end of the process, fill the required volume of transmission fluid into the dispenser. Remember that the gear oil should only be filled in the volume specified in the service book of the vehicle, neither more nor less.
Can I mix gear oils from different manufacturers? The situation with gear oils is very similar to that of motor oils. Both products are not fully unified. Simply put, lubricants with similar characteristics are in fact very different. Therefore, mixing transmission oils is not recommended unless it is an extreme case of force majeure. Of course, the transmission unit does not undergo such extreme temperatures as inside the engine itself, you might think. So why not refill a similar product from another manufacturer instead of replacing it completely? After all, it would seem that there is nothing wrong with this. This is a categorically wrong judgment. When mixing oils, there is a high probability of precipitation in the form of white flakes. What are the consequences of these experiments? They clog the entire transmission system, especially the automatic transmissions and variations. The filters become clogged so that the entire system can fail very quickly. Is it worth the risk? Of course, there is also the option of "carrying an Avos". But with fire is not worth playing. Such manipulations are a kind of lottery, where at stake is the correct functioning of the most important transmission unit. To be continued in the next part: https://zen.yandex.ru/media/id/5d8ce9350ce57b00ade9d0c2/change-of-transmission-oil-part-2-5d93602b8d5b5f00b14d5aea