Heavy ShockProof Gear Oil - quart – All-Star Oils
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- Film thickness greater than an SAE 75W250, yet low fluid friction like 75W90
- For heavily-loaded racing differentials and transmissions, problem gearboxes
- Most popular ShockProof product, many racing and specialty applications
- Many performance racing applications like Sprint, Midget, Dirt Late Model and Quick Change Differentials, Detroit Lockers and spools, NHRA Top Fuel and Funny Car rear ends
- Not recommended for most synchro applications due to the product's extreme slipperiness
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