Quote:
Originally posted by cak
There are special synthetic formulation for just that reason. Redline tacks on -NS (for No Slip) to signify that they're for that kind of diff, for example!
GM also makes (made?) an additive that can address this problem.
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The Swepco 201 and the Amsoil SVG both contain limited slip additives.
When using gear oils that do not have the additive, you are supposed to add the additive. Usually sold in 4oz bottles, I'm sure the GM product you mention is the same or similar to the MoPar product I used to use. However, you're not
supposed to need it if the gear oil already has the stuff.