How Many Kilometers to Change Transmission Oil for Automatic Cars?
1 Answers
There is no unified standard, but generally, automatic transmission oil should be changed every 2 years or 40,000 kilometers, while manual transmission oil is typically changed every 40,000 to 60,000 kilometers. Transmission oil is a lubricant that keeps the gear system clean, ensuring the transmission operates smoothly and extending the lifespan of the transmission components. Below are the methods for changing transmission oil: 1. Gravity Drain: Similar to changing engine oil, loosen the oil pan bolt and let the transmission oil drain out by gravity. This is the simplest method, but it doesn't completely remove all the old oil due to mechanical design constraints like recesses and uneven surfaces. 2. Machine Flush: New transmission oil is added to a flushing machine, which connects to the transmission's oil lines. Under hydraulic pressure, the new oil pushes out the old oil, resulting in a cleaner oil line. The more new oil used, the cleaner the system becomes. A machine flush typically requires about 10-13 liters of transmission oil and takes approximately 40-80 minutes. 3. Oil Pan Removal: This method involves removing the oil pan for a thorough cleaning and also allows for cleaning the oil filter. However, due to the labor-intensive process, most 4S shops do not perform this method.