1. Foaming: Excess fluid can cause the transmission fluid to foam when agitated by the moving parts. Foamed transmission fluid loses its lubricating properties, leading to increased wear and tear of transmission components.
2. Increased Pressure: Overfilling the transmission can lead to increased internal pressure. This pressure can cause seals and gaskets to fail, resulting in leaks. Higher pressure can also put strain on the transmission components and shorten their lifespan.
3. Clutch Slipping: Too much transmission fluid can interfere with the proper engagement of clutches or bands. This can cause slipping, resulting in reduced power transfer and transmission inefficiency.
4. Overheating: Excess fluid can cause the transmission to overheat due to increased friction and churning of the fluid. Overheating can degrade the transmission fluid and accelerate wear on components.
5. Driveline Vibrations: In some cases, excessive fluid can cause driveline vibrations due to unbalanced rotating components or fluid turbulence. These vibrations can be felt in the vehicle's cabin.
6. Shifting Issues: Incorrect fluid levels can affect the transmission's ability to shift smoothly. You might experience delayed or harsh shifting, or the transmission may slip out of gear.
If you suspect that you've overfilled the transmission, it's important to have the excess fluid drained as soon as possible to avoid potential damage to your car's transmission. Consult your vehicle's owner's manual for the correct transmission fluid level and seek professional assistance if needed.
