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hwo do i know i needa rebuild my diffs?? i have a rs4 3 ss....i wanted to do something over the winter i rebuilt my shocks already........and any tips on rebuilding diffs and hwo do i do it??thanks8-0
You can re-pack them with grease. While you are at it you can change viscosity, if you don't like the action you can change slippage with a kit of different springs for them from HPI.