Thanks for the input Gentlemen. It is definately gear oil that I'm leaking into the clutch housing, I had a chance to look at it closer this weekend. From my manual looks like I have to replace an oil seal around the main shaft and a couple o-rings between the main and the PTO shaft. I would certainly still replace the rear seal and anything else I can get to while the tractor is cleaved. As for the clutch pack, what are your thoughts on replacing just the the clutch discs and the spring disc/s? Thanks again.