Re: omc 800 prop seal
I have no experience with stern drives. I would think that the the oil seal around the prop shaft would be about the same idea. If you have the two oil plugs similar to outboards, they, again would be likely culprits. There must be a web page that deals with I/Os where someone could give you solid info. If you can't find one try the good old fashioned library. They probably have some reference type books. Good luck, Granpa