Fix Differential Leaks: Car Repair Tips

Presented by Doug Jenkins

Learn how to diagnose and repair a differential leak, from removing the wheels to caulking the axle, in this free auto-restoration video series from our expert mechanic and body shop owner.

Series Summary

The differential in automobiles is a device that allows wheels to rotate at different rates while channeling the proper amount of force to each one. During a turn, the inner wheel spins faster than the outer one. A functional differential accounts for this difference and allows you to maintain control during a turn. But one that isn't working properly results in unpredictable handling and possibly failure of the entire drive train. And you definitely don't want that to happen!

In this free car-repair video series, our automotive expert tells you how to diagnose and repair a differential leak. Doug Jenkins talks you through the entire process, beginning with how to rack your car and how to remove wheels, brake drums and the axle in the course of removing the differential. He then demonstrates how to clean and caulk the differential housing and put everything back together again. As a bonus, you will learn how to add fluid to your differential and tips to keep it in good working order.

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Cleaning Tips: Differential Leak Repair

Our expert custom-car mechanic offers tips for cleaning the differential when repairing a differential leak to prevent gear lube from acquiring dirt; learn more in this free auto-restoration video.

Finding a Leak for Differential Leak Repair

Often, leaks are found where the gear carrier bolts to the axle, but you'll need to find exactly where it's leaking before you seal it; learn how in this free auto-restoration video.

Filling Fluids for Differential Leak Repair

Fill the differential fluid reservoir with gear lube, using between one and two quarts of oil, using limited-slip gear additive for limited-slip differential; learn more in this free auto-restoration video.

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