How often do diff's need to be rebuilt?
#17
I just install 'em and run 'em. The stock xray bearings I soaked overnight in Mobil 1 5w-30 since they were rumored to have issues with "dry" bearings shipped in some kits (this was with the '007 kits). The Avid come pre-greased. You could blow out the excess with a blow gun and compressor, but I don't bother.
#19
Tech Master
I usually spray them with motor spay to take some of the lube it comes with away. then apply a drop of bearing oil. But sometimes I just put them in the car, and they tend to get more free as I run the car.