How many miles to change transmission oil?How to tell if the gearbox oil needs to be replaced

The oil replacement mileage of manual transmission is 40,000 to 60,000 kilometers, and the mileage of oil replacement of automatic transmission is 60,000 to 80,000 kilometers. If you look at the time, the oil replacement cycle for manual transmission is 2 years. The replacement cycle of gearbox oil is about 3 years.

The replacement cycle of transmission oil is not fixed. The specific replacement cycle depends on the use of the vehicle, so as to determine whether it needs to be extended or shortened. When shifting gears, if there is an obvious non-slippery situation, or if there is a large noise when accelerating, then the transmission oil needs to be replaced as soon as possible.

Determine whether the transmission oil needs to be replaced

1. When the color of the transmission oil turns reddish brown or black, and it contains a lot of impurities, and there is an obvious odor, it means that the transmission oil has deteriorated, and the deteriorated transmission oil needs to be replaced;

2. The power of the vehicle is obviously reduced, and it is in a sluggish state when speeding up, requiring a long reaction time, and there is a situation of weak acceleration. Although the speed of the engine has been increased, there will be a lot of noise, and the speed of the vehicle has not increased significantly;

3. The gearbox is prone to overheating. The temperature of the gearbox is generally not too high. If it is too high, it should not be cooled in time, or the bearings and gears are damaged;

4. After stepping on the accelerator pedal with the right foot, although the engine speed is increased, the vehicle does not appear to move forward or backward obviously, just like the gear is not engaged.