[coaltrain]

Thanks for the good ideas. I'll use some grease or gasket adhesive. The cover does need to come off to get to the o ring. Lots of fluid loss. Trying to figure out the best way to drain the new fluid back into the 1 gallon jugs it came in. Probably use a very clean funnel and make sure the area around the drain is wiped off clean.

That much fluid coming all at once may very well overwhelm a funnel. A clean drain pan with plenty of capacity might be better. Then it's just a matter getting it from the pan back into the tractor.....