The rear end can only leak an 4 places, each axle has a seal, the pinion has a seal and the cover uses either a gasket or rtv, some older rear ende hav a gasket for the chunk.
As long as you are not replaceing carrier bearings or gears you will have no problem resealing the rear end.


I didn't do it, no one saw me do it, you can't prove anything! "Bart Simpson"