1979 C3 Diff fluid?

[Lefty]

Hi,
Just wondering what fluid you may recommend and where your getting it from.
C3 1979
Many thanks in advance,
Best
Lefty

[Vettech]

I'm not a diff expert, maybe Bfit, SR Performance guys.

BUT!

I believe they are Limited Slip Diffs, and require a GM spec oil + an ounce or 2 of a special additive.

I'm sure someone with a better understanding will chine in......

[bfit]

I run Castrol Limslip 90, no additive's required.
Bfit

[sirfixalot]

GM LSD additive is available from Chev parts Yennora and I think also Holden dealers

[Lefty]

Thanks that's all very helpful. I looked at an ac delco
product and additive and it needs to come from the states, which takes some time.
Cheers
Lefty