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Old 06-09-2012, 05:12 PM
TRWXXA TRWXXA is offline
Premature Curmudgeon
Join Date: Feb 2012
Posts: 199
Default Re: Rear diff fill plug is rusted and stripped...

You can fill through the vent tube. Just make sure you find out exactly how much gear oil (and friction modifier, if necessary) your rear end requires. Not all 8.8" rear ends need the same quantity, so check your owners manual.

It's okay to put in a little bit more than necessary (about 4 ounces or so), but you don't want put much more than that. A little to much is definately better than too little.

For next time get yourself an after market differential cover with fill and drain plugs in it, and avoid using the stock, PITA plug all together.
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