* Amount of leakage: A small, slow leak might not cause significant harm before repair. A large leak, however, allows substantial fluid loss, which could lead to problems.
* Type of fluid: Transmission fluid is not compatible with clutch components. If it gets on the clutch disc, it can cause slippage, glazing, or even complete clutch failure. The extent of the damage depends on how much fluid contaminates the clutch.
* Time: The longer the leak persists, the greater the chance of significant clutch damage. Fluid exposure gradually degrades clutch friction material.
* Driving habits: Aggressive driving (frequent hard starts and stops) will exacerbate the damage caused by contaminated clutch components.
In short: While replacing the seal promptly is crucial, there's a risk of some clutch damage even if the transmission still has fluid. The degree of damage is uncertain without inspection. Once the seal is replaced, it's advisable to have the clutch inspected for fluid contamination. If significant contamination is found, a clutch replacement might be necessary. Ignoring the issue could lead to costly repairs later.
