I pulled my outdrive planning to just store it inside for the winter but (not) to my surprise I found a pool of gear oil in the bellows. I say not to my surprise because all season I have had small amounts of oil in the bilge. The remote oil tank also ran low so now I’m pretty certain it’s gear oil I’ve had in my bilge all season. That being said I am in the process of pressure testing my outdrive. Initial test showed the shift shaft bushing was leaking. Changed that and now it’s holding a lot better. In about an hour it hasn’t dropped at all. So if it doesn’t leak air meaning the yoke seal is good, where did the oil come from? Is there any way it could leak directly from the reservoir into the bellows?