I keep my boat in the water with the engines tilted. When I return to the boat, one of the engines has leaked out of some of the XD-50 oil into the "trough". I figure there is a slow leak somewhere in the oil tank probably a seal.

There is an ETEC 50 that parks next to mine that spilt all of its XD50 oil into the boat in the same fashion, so this must be a fairly common problem.

I can't figure out where exactly it is leaking the oil from, but was hoping someone might be able to guess so that I do not have unnecessary parts replaced. e.g. don't want to order a whole new tank if all I need is a rubber washer....

Thanks,