Flushing and replacing differential fluid is one way to ensure that excess wear doesn't occur to avoid costly issues down the road. Your owner's manual should specify the correct service intervals for a differential flush and refill. When servicing the rear differential, it is a great idea to replace your drain/fill plugs and flange seals, as these items are prone to leaks in your high mileage differential.
This Part Fits the Following Vehicles
|Audi||B8 S5||Quattro||V8 4.2L|