Hey I was handed a 15hp 4 stroke OB with I think a pretty heavy duty problem. I'm not sure what exactly is wrong but symtoms include oil leaking out of cooling water intake, through prop exhaust, and through the pressure relief exhaust (which ends up leaving a black stain below it). The motor also needs to be refilled with motor oil every 5-7 hours of running. I know that there may be a gear-case seal failure but I havent checked yet but I dont think that would cause oil to come out of the exhaust. I will take a closer look at the engine but I'm interested in any leads as what to look for. Thanks
