Audi 90 Quattro Rear Differential Fluid Change Cost.

The average cost for a Differential Fluid Replacement - Rear is between $58 and $106. Labor costs are estimated between $26 and $34 while parts are priced between $32 and $72. Estimate does not include taxes and fees.
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Best Practices

Differential fluid breaks down and becomes contaminated with moisture over time and can lead to differential damage from a lack of proper lubrication. It should be replaced at the interval specified by the vehicle manufacturer.

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