Some car owners, Xiao Bai, listened to the publicity of 4S shop when buying a car, thinking that gearbox oil is maintenance-free for life, so they ignored it from the beginning. In fact, although transmission oil does not need frequent maintenance and replacement, it also has its replacement cycle, but the maintenance and replacement cycle is longer. How often should the transmission oil be changed? Don't always listen to 4S stores. At that time, the car will be guaranteed in advance, and the maintenance manual of the car will have the replacement cycle of various oils, and the transmission oil is no exception.

If the vehicle's maintenance manual can't be found or there is no clear oil change regulation in the maintenance manual, it is generally replaced according to the mileage of 60,000 kilometers, generally exceeding the mileage of 60,000 kilometers. Even if the vehicle is used for a short time, it should be replaced. Otherwise, if the gearbox oil is not changed for a long time, it will not only affect the driving experience, but also lead to the failure of the gearbox due to oil deterioration. But now many cars have the slogan of maintenance-free for life. Is it really maintenance-free for life?

Generally, the transmission oil is changed according to the mileage of 60-80 thousand kilometers, but the situation of each car is different. If you often run high-speed, take mountain roads and work under heavy load, it is recommended to change the cycle in advance. In addition, after a period of running-in of new cars, the transmission oil loss will be relatively large, and it is recommended to replace it every 40,000 kilometers. Depending on the type of gearbox, there will be some differences in the mileage of changing gearbox oil. For example, manual gear, because the internal structure of manual gear is relatively simple, the function of gearbox oil is basically lubrication, so it can be used even if the gearbox oil is dirty, which will not have much impact on the operation of the car.

If it is an automatic gearbox, the mileage of changing gearbox oil will be shortened. Because the internal structure of automatic transmission is complex, the function of transmission oil is not only lubrication, but also power transmission. Therefore, the oil change mileage of automatic transmission should be greatly shortened. If you don't pay attention to the replacement, the gears inside the gearbox will be seriously worn and the shift speed will be reduced. Therefore, the old driver suggested that the automatic gearbox oil should be changed once every three years or 60 thousand kilometers.