What are the consequences of not changing transmission oil?
2 Answers
Consequences of not changing transmission oil: It will affect the performance of the car. During the use of the transmission, friction between metal components will generate debris and impurities. Over time, the transmission oil will become dirty, oil passages will become blocked, leading to rough gear shifting, poor transmission efficiency, weak acceleration, and to some extent, increased fuel consumption. The reduced effectiveness of transmission oil can easily cause poor lubrication, accelerated component wear, and corrosion of mechanical parts, thereby shortening the service life of the transmission. Transmission oil needs to be checked regularly and is generally replaced every 80,000 kilometers. Transmission oil serves to lubricate and clean the transmission, ensuring its normal operation.
I once experienced transmission issues on the highway, all because I neglected to change the fluid. At that time, the car started showing rough gear shifts, especially delayed downshifts, as if being dragged along. Later at the repair shop, when they opened it up, the fluid had turned into a black, sludge-like substance mixed with metal shavings. The mechanic explained that sludge buildup can clog the fluid passages, causing the valve body to stick and resulting in insufficient hydraulic pressure. Prolonged wear from this can lead to premature failure of clutch plates and gears. The scariest part was the loss of high-temperature protection, which could cause the transmission to fail completely. Now, I strictly follow the manual's recommendation to change the fluid every 60,000 kilometers. After all, replacing a transmission can cost tens of thousands, enough to buy several barrels of fluid.
