Slip Loc Additive...

[galaxy]

Interesting tidbit...I know it's been discussed about not needing, not adding the slip loc additive to gear oil with Torsen - I was just going through the owners manual on my '12 with Torsen. The spec table says add the slip loc additive and makes no reference at all to omitting for Torsen or anything else. Yes, I'm aware top shelf fluids claim it's not needed with their product. I'm curious where the conversation about not using with Torsen started? Was that later years?

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[Wraithracing]

The additive causes slippage in normal clutch type differentials. Non clutch differentials such as Torsen/True Trac, etc. don't require the additive. In fact Eaton Detroit True Trac specifies non synthetic gear oil only with no traction lock/anti slip additive. Torsen recommend synthetic gear oil with no additives/friction modifiers. Personally, I would leave it out, but opinions may vary.

In old style clutch positractions/traction lock differentials the additive/friction modifiers allows silppage so you don't get clutch chatter with the differential, but can actually lead to the cutches wearing out earlier due to said slippage.