Originally Posted By Dolph
Has anyone tried a 10% addition of STP oil treatment to the bevel box?

Dolph

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Original formula STP is rich in ZDDP (Zinc) which is good for solid lifter motors, and may have a benefit in your BB. I see that STP also makes a gearbox additive.

Last edited by Draggin; 01/08/16 04:46 PM.
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