I have never had to replace the diff balls from Xray, they are carbide and will wear the rings down.
The crunchiness is usually dirt in the thrust bearing.
The kit included tube of grease is diff lube, not one-way grease.
PS: BigB your giving advise on something you know nothing about again, and your advise is dead wrong.
Last edited by C_O_jones; 08-04-2007 at 07:16 PM.
Reason: sp