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#084-122: Red Line® Heavy ShockProof® Gear Oil (sold in quarts) Double click on above image to view full picture

Red Line® Heavy ShockProof® Gear Oil

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Red Line® Heavy ShockProof® Gear Oil is recommended for heavily-loaded racing differentials, transmissions, and problem gearboxes. Excellent for many performance racing applications like Sprint/Midget/Dirt Late Model Differentials, Detroit Lockers and spools, NHRA Top Fuel and Funny Car rear ends. Heavy ShockProof has a film thickness greater than an SAE 75W250, and yet low fluid friction like 75W90. Not recommended for most synchro applications due to the product's extreme slipperiness. Sold in quarts.


Red Line® engine and transmission lubricants have long been the choice of racers and knowledgeable engine builders. The thermal stability, film strength and reduced parasitic drag found in Red Line® engine oil all contribute to lower operating temperatures, increased engine life and more power. Red Lines’® racing heritage is reflected in all of their’ll see more Red Line® products at the track than any other lubricant manufacturer for all of these reasons.

About Red Line® ShockProof® Gear Oils
    • Unique lubricant with solid microscopic particles offers low drag/high protection
    • Relatively low viscosity, yet cushions gear teeth under extreme pressure
    • Helps to prevent tooth breakage, resists throw-off
    • Avoid use with pumps, coolers, and filters as unique medium and affinity for metal can cause clogging
    • Designed for wet sump transmissions and differentials with splash lubrication
    • Available in quarts only

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Additional Information

Brand Red Line®
Type Differential Gear