Re: Leaking Greenish Oil
All of us think that the vent and fill plug seals should be replaced anytime that the plugs are opened.
Personally, I buy the seals in bags of 50 from iboats and just don't have to think about it. PN 18-42481-9 Gasket-drain/fill.
A good wrench might not have left that for you to have to worry about, so yeah, *****.
BTW, always try to store the engine in the running position. It is better for midsection drainage, keeps water out of the gearcase that could freeze, and allows the engine to drain completely. When possible, grease the PT&T rams and completely withdraw them so that they are protected.