SStheBest

iTrader: (2)

i was wandering if i had to use the gm additve with this type of gear oil....i know the manuel says to but u guys know the manual kinda gets thrown out when u mod somthin....i still have the 10 bolt but the factory oil they put in aint the greatest so input on this would be nice.....

WS6 #3392

I still use the GM additive even in my Moser so I would keep useing it in your 10 bolt.

SStheBest

iTrader: (2)

alright.....i wasnt sure b/c some say it has the additve so i was still

Flawless02SS

iTrader: (9)

if you go with the full synthetic 75w-140 no additive is needed

Black Plague

iTrader: (13)

No additive is needed but I like to put a bottle in anaway And I use Royal Purple Max Gear 75W90

red95ssclone

iTrader: (2)

If it says on the bottle that it is already in there, you dont need it. If your running an expensive setup, i would run synthetic. Lube Shop expertise