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i only use the GM posi additive they sell at the dealership. Its like 5-7 bucks a container (bout the size of a cough medacine bottle).
I forget the weight of the gear oil i use, i wanna say 90 weight cause thats the number i get in my head. not sure though.
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2001 Trans Am WS6 •SLP Loudmouth II •UMI Suspension •12.857 @ 109.57
1996 Trans Am WS6 •Pacesetter Longtubes •Strange 12 Bolt •Spohn Suspension •11.152 @ 123.85
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