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Cost on repair, or of the parts to repair the differenial

(1999 Ford Explorer)
in Guatay, CA on October 06, 2010
I hear a grinding noise when i accelerate my car. afriend pulled the plug to check ou the gear oil. The plug was close to dry and the color of the stuff on his finger was a gun metal gray. ??? maybe metal shavings??? can i clean this up put new gear oil, gasket seal on the diff. at home? Cost? or cost to have it done?
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Popular Answer
on October 06, 2010
Grinding from inside the rear differential or from axle or hub bearings is a significant repair that is not best done at home.

You could indeed start by removing the rear cover, draining the oil, and having a look inside. Reseal it, refill it with the proper gear lube (and friction modifier, don't forget, if it's a locking diff), and try again.

There are several issues historically that could be occuring with the differential, and if there are any kind of miles and has been any kind of leak, then there could be wear that needs repair.
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