Should I use friction modifier in the rear end?

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DCOBRA97 said:
Absolutley agree with the above posts...........make sure you add the modifier, and or go the synthetic route.

See my website below - I did test several synthetic lubes with and w/o friction mod.... the only thing I can't attest to still is Redline's gear lube w/o friction mod, but I've "heard" it works fine.

but yes - use friction mod, 4 oz, no matter what the gear lube mfg. tells you - just to be safe. It won't hurt a thing.

TF