Re: gear oil on hub, what to do? - \'82 CJ
CHECK THE VENT! It should be on the top of the axle - often where the brake lines connect - on the junction block. Sometimes it's a cap looking thing, sometimes theres a hose on it. Unscrew it and clean it.
The air in the axle housing expands with heat. It has to go somewhere, it's going to get out somehow. Normally it goes out the vent, but if it's plugged, it forces it's way out the pinion seal or axle seals taking some oil with it.
It may be that simple!