How Many Kilometers Should You Change the Transmission Oil for a Car?
2 Answers
Small car transmission oil should be changed every 40,000 kilometers. Here’s an introduction to transmission oil: Function of Transmission Oil: The main function of transmission oil is to keep the gear system clean and to lubricate the transmission components, thereby extending their lifespan. Due to different transmission designs, there are manual transmissions and automatic transmissions. Each transmission design has different technical requirements. Even the same model of transmission configured in different car models will vary in terms of torque, weight, speed, and structure. Therefore, the original manufacturer specifies its own dedicated transmission oil. Precautions for Changing Transmission Oil: Transmission oil working under high-speed and high-temperature conditions for a long time can deteriorate and evaporate, thereby accelerating the wear of mechanical parts and, in severe cases, damaging internal transmission components. If the transmission oil is not changed for a long time, the car may experience weak starts when cold. During driving, the vehicle may exhibit slight slipping. Long-term failure to change the transmission oil can cause the oil to thicken, potentially obstructing the transmission cooler, leading to excessively high transmission oil temperatures and increased wear.
Having driven for over a decade, I've learned there's real nuance to transmission fluid change intervals. For manual transmissions, it's generally appropriate to change every 40,000 to 60,000 kilometers, while automatics can go slightly longer, typically 60,000 to 80,000 kilometers. But don't just rely on mileage - driving habits matter too. If you're frequently stuck in city traffic with constant low-gear shifting, consider changing as early as 50,000 kilometers. I once waited until 80,000 kilometers to change mine, and the gear shifts became noticeably rough. Always use the manufacturer-recommended fluid - formulations vary significantly between models. Also remember to check fluid condition every couple years; if it appears blackened or has a burnt smell, replace it immediately.
