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Thread: Differential Fluid change
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04-02-2008, 06:56 PM #1
Differential Fluid change
Well im planning on doing my differential fluid soon so i wanted to see if anyone had any tips.
I dont know what the guy before me put in it but im planning on putting 2 quarts 75w-90 mobil-1 gear lubricant. Is that a good lube too put in the diff?
this will be my first time doing this with the diff but ive been reading up on it and watching some stuff online and it seems simple enough.
Anything else i should put in? or something i should know about?
Thanks!!!
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04-03-2008, 05:54 AM #2
ttt... I'm curious too
What fluids types and additives is everyone else using?
and how often are you changing it?
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04-03-2008, 06:09 AM #3
- Join Date
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PEWTER- 2001 TRANS AM WS6
NO ADDITIVE the worm gears dont need it 75 90 syn is the type of gear oil from the factory and I was changing mine every 9000 miles but the oil was free so now its been about 2 years I check it regularly and its clean I am planing on changing it befor summer
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04-03-2008, 11:52 AM #4
RedLine or AmsOil!!
Don't be afraid of the bottle!!! Be afraid of your tune!!!
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04-04-2008, 11:10 AM #5
I run mobil 1 75-90 and catrol posi lube. I change mine once a year after it comes out of storage.
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04-04-2008, 06:57 PM #6
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04-04-2008, 08:11 PM #7
I just changed mine for the first time with RP 75-90. Came out nicely.
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04-04-2008, 08:24 PM #8
I just changed mine too. IMO, Royal Purple 75-90 is the way to go! I change mine once a year, at the beginning of the year. With the Royal Purple, you don't need to put in the posi-trac additive that the manual says to. LIGHTNINGMCQUEEN & DOCJHH45, if you two want any additional tips or tricks to make things go smoother, just send me a message or a reply.
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04-10-2008, 07:17 PM #9
I have a 00 Trans Am M6 with 100k miles. So for this fluid change should I get Royal Purple 75w-90 and a new gasket? And does this sound sufficient? Also there is no need for any additives?
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04-10-2008, 07:21 PM #10
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09 EclipseGT 75 Chevy 4x4- 2001 Trans-Am 13 F-XT
I never thought the 10bolt was even worth a fluid change.
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04-10-2008, 07:26 PM #11
Im kinda strapped for cash now and just want to do what ever i can to help keep everything goin good
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04-10-2008, 07:28 PM #12
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09 EclipseGT 75 Chevy 4x4- 2001 Trans-Am 13 F-XT
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04-10-2008, 07:36 PM #13
I thought it would be better to change all the old stuff out and in with the new instead of mixing new with old. But im not an expert on this stuff
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04-10-2008, 07:37 PM #14
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09 EclipseGT 75 Chevy 4x4- 2001 Trans-Am 13 F-XT
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04-10-2008, 07:38 PM #15
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04-10-2008, 07:41 PM #16
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04-10-2008, 07:42 PM #17
For the fluid and perhaps gasket how much am i lookin to spend? Also where to get them both? Autozone?
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04-10-2008, 07:49 PM #18
I use Royal Purple differential fluid personally and highly recommend it for you too. By maintaining the differential, you're going to prolong the life of the rear. Also, when you take the cover off, you'll have the opportunity to make sure none of the gear teeth are chipped. If you're using a high quality synthetic like Royal Purple, you won't need to add the GM posi-trac additive as you would normally have to.
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04-10-2008, 07:53 PM #19
Ok thats what i wanna get for it...Royal Purple. And did u replace the gasket on the differential?
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04-10-2008, 07:57 PM #20
Autozone only carries Royal Purple engine oil; for some reason, they don't carry other RP fluids (like differential & tranny fluid). They do have the gasket for the 10 Bolt-the brand is Felpro. I believe the part number for the Felpro gasket is RDS 55072, but they can tell you for sure at the store. As far as the oil, I get mine online. If you're hard up finding the Royal Purple, I always have extra quarts on hand that I could sell to ya.
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