Is this oil leak due to the water pump oil seal failure?
All I did was the following:
- Change the engine oil.
- Add the coolant (50/50) to an optimum level.
- Adjust the valve clearance.
After the valve adjustment, I checked the cylinder head cover gasket
to make sure there's no oil leak. (gasket sealant was applied to the
semi-circular rubber areas in front, and I detected no oil leak from cylinder head cover)
After all, my ST has 128k miles on it, and I've heard that it's a pretty common
issue among the high mileage STs.
I'd appreciate your input.
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