My son just called and said his lawn mower is smoking badly. I'm
positive he over-filled the crankcase with oil since he claimed he put
in an entire quart. My experience is that most mower take far less
than that but he said he couldn't see it so he kept adding. He's going
to try to drain about half of what he put in and then see what happens.
My question is, if he did overfill it, what damage did he possible due
to the engine?