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best gear oil for TrueTrac

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Old Sep 28, 2012 | 07:15 AM
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Default best gear oil for TrueTrac
I need opinions on the best conventional gear oil for a truetrac rear end with 4.11 gears. Getting ready to install one on my 2011 Silverado CCSB 6.2.
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Old Sep 28, 2012 | 09:46 AM
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Originally Posted by Maf6.2
I need opinions on the best conventional gear oil for a truetrac rear end with 4.11 gears. Getting ready to install one on my 2011 Silverado CCSB 6.2.
I use amsoil in everything that requires oil. I like it but it is pricy.
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Old Sep 28, 2012 | 02:20 PM
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AMSOIL only has synthetics. Eaton only recommends conventional gear oil for the TrueTrac. I went with Lucas 80w90 high performance gear oil.
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Old Sep 28, 2012 | 02:23 PM
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I used Valvoline 75W-90.
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Old Sep 28, 2012 | 02:46 PM
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Another for 75w-90 with 410s/TruTrac in my 06 CCSB
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Old Sep 28, 2012 | 03:11 PM
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I used Lucas 80w90.. but with a Eaton LSD..

just about anything thats not synthetic will work, i would run anything but Coastal brand.
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Old Sep 29, 2012 | 08:52 AM
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Originally Posted by Ferocity02
I used Valvoline 75W-90.
No problems in 6k miles.
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Old Sep 29, 2012 | 01:09 PM
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Originally Posted by Velocity1


No problems in 6k miles.
same here

the only 75-90 i could find in my area that was non synthetic...

4.88s w/ t-56 is real fun
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