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　　How often to change the tank oil:

　　1. Under normal circumstances, the automatic transmission oil (ATF) of cars needs to be replaced every two years or every 40000 km. However, it depends on the model. Different models have different demands. As far as Japanese models are concerned, it is advocated to replace them once every 40000-60000 km. For vehicles with more high-speed traffic, it is suggested to replace the cloth once every 40000 km.

　　2. The automatic transmission oil can not be completely discharged clean by using atmospheric pressure, so it can only discharge 1 / 2 of the waste oil. The remaining oil will gather with sludge and impurities in the valve body, torque converter and cooling pipeline, forming a blockage in the internal oil circuit of the system. More than 99% of the failures of automatic transformer boxes are caused by overheating and impurities in ATF oil which has not been replaced for a long time. Also check whether the transmission bottom shell is deformed or whether the transmission pipeline is leaking oil.

　　Danger of not replacing

　　1. The gearbox oil will transmute and transpiration when it works at high speed and high temperature for a long time, then aggravate the wear of mechanical parts, and damage the internal parts of the gearbox when it is severe.

　　2. If you don't replace the transmission oil for a long time, the cold car will show the appearance of weak starting

　　3. In the process of moving inside the vehicle, there is a slight appearance of slipping.

　　4. If the transmission oil is not replaced for a long time, the transmission oil will become thicker, which will easily block the radiator of the transmission, and then the oil temperature of the transmission will be too high, which will aggravate the wear.

      Article from：http://www.wxtea.cc