Re: Favorite penetrating oil that DOESN'T STINK!
Well, if you want to unstick something in a non-toxic bioregradeable fashion...buy a Co2 extinguisher. Ice the parts down, let 'em warm up, ice 'em down again. Repeat up to 3 times if need be, and you should be able to unstick most anything on the boat.
Anybody complains about a smell from Co2, you ice them down too.