SLP Posi needs GM additive or no?
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From: Florida
Car: 1992 Camaro RS
Engine: Yet another 350 TPI
Transmission: Borg Warner 6 spd
Axle/Gears: 3.73
SLP Posi needs GM additive or no?
I know it works with gears and not clutches so I didn't think it would need the friction modifier from GM (I think thats what its called), but I want to be sure. I did a search and some people are using it. Is it needed?
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