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1989 Chevrolet S10 Max Gear

4. Once the cover was reinstalled, I fed in almost two bottles of the Royal Purple Max-Gear 75-90. Max-Gear is designed to provide protection to heavily loaded gears with a blend of synthetic oils and Royal Purple's proprietary Synslide additive. All viscosities of Max-Gear are formulated with hypoid friction modifiers, which are necessary for use in clutch- or cone-type differentials. So, if you have a posi, no additional additives will be necessary.
1989 Chevrolet S-10 Tune-Up - Maintenance With a Shot of Whoop Ass

 4. Once the cover was reinstalled, I fed in almost two bottles of the Royal Purple Max-Gear 75-90. Max-Gear is designed to provide protection to heavily loaded gears with a blend of synthetic oils and Royal Purple's proprietary Synslide additive. All viscosities of Max-Gear are formulated with hypoid friction modifiers, which are necessary for use in clutch- or cone-type differentials. So, if you have a posi, no additional additives will be necessary.  View Related Article

 

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