How many kilometers to change car gear oil

Automobile gear oil usually refers to transmission oil and rear axle lubricating oil. These transmission mechanisms have a lot of gear components, and the surface pressure is high during operation, so gear oil is required for lubrication, cooling, heat dissipation, and corrosion prevention. Also with the operation of vehicles, automobile gear oil also needs regular inspection and maintenance. Let's take a look at how many kilometers to change the automobile gear oil.

Transmission oil, one of the gear oils, can be divided into automatic transmission oil and manual transmission oil. The replacement cycle of manual transmission oil can be slightly longer than that of automatic transmission oil, and both can be controlled to be replaced once at 60,000 to 80,000 kilometers. Some friends may have questions. My maintenance manual says "The gearbox is maintenance-free for life." Is it necessary to change the oil?

In fact, it is difficult to realize the lifelong maintenance-free gearbox, because the precondition that the gearbox must reach the most ideal working condition. The ideal state includes no leakage points in the gearbox, and the working temperature and working strength of the gearbox oil are within the ideal range. However, it is difficult to guarantee in actual use. If the gearbox oil works at a higher temperature, its service life will be shorter.

The rear axle lubricating oil, which is one of the gear oils, may be an oil that many car owners often neglect to check and maintain. Daily cleaning only needs to remove the mud and dust on the vent plug on the rear axle housing. If necessary, it can be removed and cleaned to ensure unobstructed airway. The gear oil is changed every 20,000 kilometers. Pay attention to check whether the oil is discolored, sticky, etc.