If you run Moser C-clip eliminators (will not work with strange C-clip eliminators) on 28 or 31 spline axles you can use a axle seal to keep them from leaking. It is Napa part #13988...about $12 a piece. I just installed them in my rearend housing tonight....look like they are gonna work great...fit like they were made for a 8.8 axle tube. I found this tip while searching around on the corral forums....few other guys that have tried it said it works for them also. Figured I'd pass it along.