3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

changing the front/rear diff. oil?

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Old Nov 24, 2008 | 08:45 PM
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rudy's Avatar
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changing the front/rear diff. oil?

Hi guys, just want to ask you if when you guys changed your diff oils did you had them sucked out or did you pull the pan off? If you pulled the pans off is there a gasket to reseal it or do you just use silcone? Thanks
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Old Nov 24, 2008 | 08:49 PM
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D45
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From: Indiana
Pull the covers, definately a more thorough route.

They have gaskets already in place.....
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Old Nov 24, 2008 | 08:51 PM
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So what kind of gasket? Is it reusable or not? Or do I just use silcone?
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Old Nov 24, 2008 | 08:55 PM
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And I got some royal purple oil, hope that is good stuff.
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Old Nov 24, 2008 | 11:58 PM
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From: Roseville, CA
Originally Posted by rudy
So what kind of gasket? Is it reusable or not? Or do I just use silcone?
It is a reusable gasket.
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Old Nov 25, 2008 | 12:26 AM
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From: Sussex Nj
what the fluid amounts for front and rear?
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Old Nov 25, 2008 | 02:21 AM
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From: McKinney, TX
Originally Posted by rudy
And I got some royal purple oil, hope that is good stuff.
If it is GL-5 rated 75w90 synthetic you are good to go. Royal purple is good stuff from what I hear, but I use Mobil 1 in my diffs.

..
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Old Nov 25, 2008 | 06:50 AM
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From: slidell, la.
Originally Posted by itr.#1446
what the fluid amounts for front and rear?
6qts. will get the job done. front and rear. the gaskets are re-usable and when re-filling, fill to 1/2" below the fill hole.
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