Engine damage from too much oil?

I did a bonehead move and overfilled my KTM 250XCF by about .10 - .15 quart of oil. I raced about two hours with the oil at this level and afterward I saw excess oil coming from the head gasket (toward the front).

What damage (if any) have I done and what should I do other than drain the oil to correct level?


If the head gasket is gone it´s gone. Change it.

More likely the oil is coming from the valve cover gasket...if you over filled the engine oil!

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