Diff problem

[zog]

Need help diagnosing a problem, Front wheel bearing went out on my mountainer, had it changed. 52 miles later front diff overheated and blew out seals then really overheated. Had front diff replaced, when I left the shop rear diff started whinning really loud right away. Same shop repaced bearings and seals in rear diff, picked it up today with same exact noise. Been using this shop for years so its not a ripoff.

What can cause the rear diff to suddenly start roaring both durring accel and decel like this?

Zog

 

[pwrranger88]

could be low on fluid. did you check it?