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Old 05-25-2011, 09:22 PM   #5
AdrianR
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Join Date: Apr 2009
Location: Tronna', Ontario
Posts: 23
Re: K10 Suburban - What Differential Oil

Thanks Bruiser - I had suspected that a straight 90W oil would be OK but I wasn't sure about the additives.

I guess a PTFE based additive - something like Slick 50 - wouldn't hurt, right?
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1985 Suburban K10 Silverado 6.2 diesel - receiving some much needed TLC.
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