Originally Posted by velociabstract
No, the oem was real low and the shop thought the bearings were marginal at best. They tried to source the bearings locally and couldn't so they put it back together with the original bearings. They filled it with ENOS oil after calling Unitrax to find out if it was approved. I would have installed it myself but if the backlash was incorrect I wouldn't know how to correct it so I left it to "experts". When I asked they pretty much told me the install was idiot proof. Take it apart, put it together and have fun. My diff is loud. It must be the bearings .........
Les
Edit: Synthetic? Oh man, drain that stuff and put in what they recommend. Didn't you read the approved fluids?
im no expert but my understanding is that the backlash is critical to a healthy and quiet diff. its corrected with spacers at the ends of the diff (from the inside) and they are determined by marking the gears with gear paint and rotating them and inspecting the mesh marks. it takes an experienced differential mech to read the marks and make the correct spacer choices. its all some experts do. set ting up a diff isnt "idiot proof" by any stretch of the imagination les no matter what they say.
yes les the motul 100% synthetic 75/90 is approved and is sold by rob