Truck Performance Pros RDL-KIT41 Red Line Lightweight ShockProof Gear Oil 75W-140 Synthetic - Case of 12 Quarts

The Truck Performance Pros RDL-KIT41 is a case of 12 one-quart bottles of Red Line Lightweight ShockProof® Gear Oil — a fully synthetic, high-performance gear lubricant engineered for racing transmissions and differentials that operate under demanding conditions.

What Makes ShockProof® Different:

Red Line's ShockProof technology uses a suspension of solid microscopic particles as an extreme pressure agent. These particles cushion gear teeth as they are loaded, helping prevent tooth breakage while allowing the use of lower fluid viscosities. The result is a lubricant that acts like a liquid grease — resisting throw-off and delivering the protective film thickness of a heavy gear oil at the fluid friction of a much lighter one.

Key Features:

• Film thickness greater than SAE 75W-140, with low fluid friction comparable to an 80W gear oil or 30W motor oil
• 40% lower coefficient of friction and 250% of the load-carrying capacity of conventional gear oils
• Fully synthetic formula based on polyol ester base stocks for excellent lubrication under extreme conditions
• Excellent low-temperature flow for improved cold-weather shifting
• Cushions gear teeth under extreme pressure, helping to prevent tooth breakage and resist throw-off
• Compatible with pumps and coolers when equipped with an inline screen (not a fine filter)
• Engineered to improve differential efficiency for better mileage and longer drain intervals
• Popular in racing applications including Hewland road racing dog-ring boxes, Bert and Brinn stock car transmissions, and G-Force and Liberty clutchless drag racing units

Application Notes:

• Designed for wet sump transmissions and differentials with splash lubrication
• Not recommended for most synchro applications due to the product's extreme slipperiness
• Avoid pumping down the center of a main shaft, as the unique particles may centrifuge out of solution

This case pack of 12 x 1-quart bottles (Red Line PN: 58404) is ideal for shops, fleet operators, or enthusiasts stocking up on one of the most trusted synthetic gear oils in performance and motorsport applications.