GM Limited Slip Additive...

[kevinfromwebb]

Hey, had a quick question: I'm going to change my rear end fluid and wondered if you can get the additive anyplace besides the pontiac dealer???

Thanks, Kevin

[mrr23]

you can get just the gear oil so long as it says for posi vehicles.

[JRF57]

I got my additive at Auto Zone---appears to be fairly common stuff around here anyway.

[cailey37]

If you can get your hands on some Royal Purple gear oil you wont need it....it's already in it......

[t/as&dds]

All of the synthetic gear oils meet and/or exceed the requirements for open and limited slip diffs. If you're going w/ dino, you may have to get the additive. I've seen it at NAPA, Autozone and Pep Boys. Don't expect to see it at a Kmart or Walmart though.

[crustysarge]

Used to be made from Sperm Whale oil, did you know that?

[RapidoBandido]

definately go to Autozone and ask them to help you find it they should have more than one choice, DONT go to Checkers there stuff is exteremely crappy I HATE CHECKERS

[02z28ls1]

If you have the torque sensing Torsen-Thextal diff-it's a non-clutch type posi,it doesn't require the additive.Believe they all got this type posi in 99.