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Reccomend gear oil please #5233493 10/08/19 12:51 AM
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TheProdigy001 Offline OP
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Hello

I have a 2006 Chevy tahoe 5.3l 4x4 with the Eaton g80 differential.
Can anyone recommend me a good non ls gear oil. Every oil the parts store has says ls.

Thank you

Re: Reccomend gear oil please [Re: TheProdigy001] #5233497 10/08/19 01:23 AM
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There is an active thread on this and it comes up every few months … Delvac 1 from Summit Racing is what I use in my G80's

Re: Reccomend gear oil please [Re: TheProdigy001] #5233542 10/08/19 04:50 AM
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ZZman Offline
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I saw many references to people using, Amsoil, Royal Purple and M1 gear lubes with no issues.


2003 Mercury Grand Marquis.
2007 Hyundai Santa Fe AWD.
2005 Toyota Avalon XLS
Re: Reccomend gear oil please [Re: TheProdigy001] #5233604 10/08/19 07:21 AM
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MaximaGuy Offline
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Amsoil SVG


2018 MB GLE350
2011 Lexus ES350
2006 Toyota Highlander 4WD
Re: Reccomend gear oil please [Re: MaximaGuy] #5233646 10/08/19 08:07 AM
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Rat407 Offline
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Originally Posted by MaximaGuy
Amsoil SVG


This in the new squeeze pack. Makes it an easy mess free job.


2002 Silverado 5.3 0w-20 AMSOIL
Re: Reccomend gear oil please [Re: TheProdigy001] #5233810 10/08/19 11:31 AM
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totegoat Offline
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The G80 uses any 75W90 oil with no additives. It doesn't know the difference from Walmart's oil or a designer oil. Spend as much or little as you want.

Re: Reccomend gear oil please [Re: TheProdigy001] #5241768 10/16/19 08:33 PM
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TheProdigy001 Offline OP
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I changed my gear oil about a week ago and I used supertech 75w90 full synthetic gear oil. The rubbing/vibration feeling on turns from a stop was gone very briefly but slowly came back when my wife drove to work. Has anyone else experienced this when using cheaper gear oil? Should I add the limited slip additive or change to a better gear oil

Re: Reccomend gear oil please [Re: TheProdigy001] #5241959 10/17/19 05:42 AM
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ka9mnx Online Content
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First you asked for a non LS additive gear oil and now your asking if you should add it. I'm confused. ST is not a cheap gear oil and does have an LS additive.
To answer your question, no. I have ST syn 75w-140 in all my vehicles and I like it better than the M1 75w-90 it replaced. Only one of my vehicles (F150) has limited slip.


2005 Ranger 3.0 - SuperTech Syn 5w-30/Motorcraft
2000 4Runner 3.4 - SuperTech Syn 5w-30/Toyota
1997 B2500 Van 3.9 - M1 HM 10w-30/Mopar
1993 F150 4.9 - SuperTech Syn 5w-30/Motorcraft
Re: Reccomend gear oil please [Re: TheProdigy001] #5242309 10/17/19 12:16 PM
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Originally Posted by TheProdigy001
I changed my gear oil about a week ago and I used supertech 75w90 full synthetic gear oil. The rubbing/vibration feeling on turns from a stop was gone very briefly but slowly came back when my wife drove to work. Has anyone else experienced this when using cheaper gear oil? Should I add the limited slip additive or change to a better gear oil

Add an ounce of LS additive, drive the truck in a few figure-8s. If the noise is still there, add another ounce. ST oil is fine.

GM normally doesn't call for an LS additive in the G80 locker. It can't hurt though.

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