To ensure the durability of an automatic transmission, the key lies in regular maintenance and good driving habits. Regularly checking the transmission fluid level is fundamental. It is recommended to confirm that the fluid level is within the normal range using the dipstick when the oil temperature reaches 50℃, and to add the same-quality fluid promptly if it is insufficient. The oil change interval is usually 2 years or 40,000 to 60,000 kilometers. Using the dynamic oil change method can achieve an oil change rate of over 90% through professional equipment, and the filter should be replaced simultaneously to ensure cleanliness. In daily driving, improper operations such as coasting in neutral and having the drive wheels on the ground when towing should be avoided. When parking, it is also necessary to avoid keeping the gear in D while pressing the brake for a long time, as these habits will accelerate internal wear. If the vehicle experiences delayed shifting, abnormal noises, or abnormalities after wading, it should be inspected and repaired immediately. As a medium for lubrication and power transmission, transmission fluid operates at a temperature as high as 120℃. Poor-quality oil or extended use will lead to sludge accumulation and affect the efficiency of the hydraulic system. It is recommended to check the oil quality every 15,000 kilometers and perform deep cleaning and maintenance every 20,000 to 25,000 kilometers. Only by using special oil and cleaning agents from regular channels and cooperating with qualified service providers can the service life of the transmission be effectively extended.