What is gearbox oil

Automatic gearbox is a very complicated mechanical structure. There are many clutches and brakes in it. Their function is to transmit power and shift gears. Therefore, one of the very important functions of transmission oil is to provide hydraulic pressure for clutches and brakes. These clutch plates and the like are all driven by hydraulic pressure, and these hydraulic pressures come from the transmission oil. In addition, the transmission oil also has the function of lubricating and cooling.

What happens if you don't change the gearbox oil

Long-term failure to change gearbox oil will cause the gearbox oil to be too dirty. Dirty gearbox oil will also cause confusion in the gearbox shift logic. What you see is that the gearbox changes gears randomly and does not upshift or downshift. , Or slow acceleration, abnormal vibration or abnormal noise in the car, these are the phenomenon of too dirty transmission oil, long-term failure to replace the transmission oil will cause great hidden dangers to your travel safety.

How often should the transmission oil be changed?

Automatic transmission for new cars | Under normal circumstances, the automatic transmission fluid needs to be changed every 2 years or every 40,000 to 60,000 kilometers, but it also depends on the model, and different models have different requirements. It is recommended to shorten the guaranteed mileage when driving frequently in congested road conditions.

Automatic gearbox for old cars | Old cars refer to the gearbox after 5 years or have been repaired, 20,000 kilometers or once a year, as long as the overhauled gearbox must be first guaranteed for 2,000 kilometers, and then maintained once a year.

Can different gearbox oils be mixed?

Like engine lubricants, ATF has different standards. Depending on the design of the gearbox, different ATFs will be matched. When choosing, you should choose according to the indications in the user manual, instead of blindly using unconfirmed third-party brands.

Therefore, in order to ensure the working performance of the automatic transmission and reduce the cost of later use and maintenance, when choosing ATF, the type of automatic transmission fluid specified or recommended in the user manual should be strictly followed. If an inappropriate ATF is used incorrectly, it is easy to cause the performance of the automatic transmission to decrease, or increase the probability of failure, and may even lose the "three guarantees" rights provided by the manufacturer.

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