4AT gearbox is not allowed for life without oil change. Under normal circumstances, the oil in the gearbox needs to be replaced once the gearbox has been used for two years or after driving 60,000 kilometers. If the oil in the gearbox is not replaced for too long, it will cause the oil in the gearbox to become very viscous. With the increase of time, the viscosity will increase accordingly, which will affect the heat dissipation of the gearbox and cause the speed change. The temperature of the box increases, which will eventually affect the service life of the gearbox, and in severe cases, damage the control structure inside the gearbox.
Some car manufacturers will stipulate the transmission oil change cycle, and some need to be replaced frequently, which requires to judge whether it needs to be replaced according to the actual situation. It is recommended to ask a professional to check the gearbox in about two years to determine whether it can continue to be used.
If the gear of the vehicle is smooth, the noise of the transmission will not change too much, and there is no need to replace it. If the oil in the gearbox has deteriorated, the deterioration of the gearbox oil will cause more impurities in the engine, which will lead to poor heat dissipation of the car, so it is difficult to guarantee the driving safety, and the gearbox oil needs to be timely. have to be replaced.
If the transmission oil is not replaced for a long time, the fuel consumption of the vehicle will increase, and there will often be stuck in the process of driving. At the same time, the change of the gear position will become very unstable, and the power system will also have certain problems. The parts inside the car will be gradually consumed, and the service life of the car will naturally be shortened accordingly.
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