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Why Do 4S Shops Only Use Gravity to Change Transmission Oil?

1 Answers

CorbinLee

07/28/25 5:30pm

Because gravity oil change is fast and cost-effective, which is more acceptable to car owners; on the other hand, machine circulation oil change carries a certain risk of causing transmission failure, so 4S shops generally use gravity oil change. The circulation machine can increase the oil change rate of transmission oil to over 80% through pressure, but it requires dynamic circulation, so the oil volume needed is more than that of gravity oil change. Below is an introduction to changing transmission oil: Regular inspection: If the car is used intensively, such as frequently driving on highways, it is best to regularly maintain and conduct a comprehensive inspection of the transmission at a 4S shop. Regular replacement: If the transmission oil is not changed for a long time, it can easily deteriorate and evaporate under high-speed and high-temperature conditions, which will accelerate the wear of mechanical parts. It can also cause the car to have difficulty starting when cold, and the transmission oil will become thicker, which can easily block the transmission radiator, leading to excessively high transmission oil temperature and increased wear.

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