JazzVibe

Introduction

Differentials are part of the drive train of a vehicle. They use internal gears to alter the direction of driveshaft rotation and to gear down the drive train. All differentials contain oil that needs to be changed every 30,000 to 60,000 miles. With a service interval that long, it's easy to forget.

Here's how to do the job yourself and extend the life of your vehicle. Having a differential flush done professionally will cost anywhere from $90 to $150. Materials to do the job yourself, as shown in the following steps, cost less than $30 and the process will take about an hour.

Tools Required

Materials Required

• Differential cover gasket or gasket maker caulking
• Differential oil (typically 80W90 grade; check your manual)

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