Red Line Oils 58404 Light Weight Shock Proof Gear Oil Red Line SHOCKPROOFTM GEAR OIL Recommended for heavily -loaded racing differentials and transmissions which see shock-loading. Red Line SHOCKPROOFTM GEAR OIL is a unique lubricant containing a suspension of solid microscopic particles as an extreme pressure agent. The viscosity characteristics allow the lubricant to resist throwoff and provide a film thickness greater than an SAE 250 grade, with the same low fluid friction as with our 80W140. Recommended for offroad racing and problem gearboxes. Lightweight Shockproof A unique gear oil designed to lubricate racing transmissions and transaxles which see serious loads (not recommended for most syncro-type transmissions). It has excellent low-temperature flow which allows easier shifting when cold. May be used to obtain maximum power transfer in racing differentials which do not see high