Do I need the GM rear axle additive?

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04-20-2009, 02:50 PM

I Go To Costco

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Do I need the GM rear axle additive?

I'm getting ready to change the fluid in my rear axle, I just got 2 quarts of Redline 75w90NS. The NS designation is supposed to mean "Non-slip" so do I really need the GM additive?

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04-20-2009, 03:06 PM

omcar

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get the gm posi fluid..I use it with each change,,

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04-20-2009, 08:33 PM

billyb

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check the type of rear you have, go to their web site and follow the manufactures recomendation, most will recomend dino oil. do the research, my 02 cents