How many kilometers should the transmission oil be changed for the X-Trail 2.5?
1 Answers
The transmission oil for the X-Trail should be changed every 40,000 kilometers or 48 months, whichever comes first. After the transmission oil has been used for a certain mileage, its viscosity will become thinner and dirtier, which directly affects the working condition and lifespan of the transmission. The following points should be noted during the replacement: 1. Special equipment for automatic transmissions must be used to completely remove the old ATF oil and other impurities. This is different from changing engine oil, where atmospheric pressure is used to drain the old oil from the lubrication system. However, automatic transmission oil cannot be completely drained using atmospheric pressure, as this method only removes about half of the old oil. The remaining oil will accumulate with sludge and impurities in the valve body, torque converter, and cooling lines, causing blockages in the internal oil passages. 2. When changing the transmission oil, it is essential to use the same type of transmission oil as the original. Manual transmission vehicles can only use manual transmission oil (also called gear oil), while automatic transmission vehicles (including semi-automatic transmissions) must use automatic transmission oil. Additionally, ensure the correct oil specification is selected. 3. Typically, when changing automatic transmission oil, the screw at the bottom of the transmission oil pan is removed to drain the old oil before adding new oil. However, this method only replaces about 30% of the oil, leaving 70% of the old oil still in the transmission. If the oil pan is removed for the oil change, the replacement rate can reach 70%, which is sufficient to maintain the transmission's health. Currently, the better method is dynamic oil replacement, which uses specialized transmission cleaning equipment. During the operation of the transmission, the old oil is thoroughly circulated and drained before adding new transmission oil, achieving a replacement rate of over 90%.
