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Red Line Oil

RED 58204

Red Line Heavy Shockproof Gear Oil - 1 Quart (58204)

z  Ships Within 24 Hours

MAP price match guarantee

Heavy Shockproof Gear Oil by Red Line

These products contain the extreme pressure additives necessary for ultimate protection road cars and racing vehicles, as well as friction modifiers for proper limited-slip operation. It features a fully-synthetic formula created from polyol ester base stocks, offering excellent lubrication under extreme conditions. High viscosity-index (VI) provides relatively constant viscosity and film thickness with varying temperature change. Ester base stocks and friction modifiers provide additional slipperiness to lower operating temperatures by reducing the sliding friction in hypoid gears. Red Line's Heavy Shockproof Oil offers superior shear stability and reduced oxidation compared to other synthetics and conventional gear oils. It also exceeds API GL-5 specifications.

Red Line Oils are engineered to provide the highest degree of protection and improvement of differential efficiency for better mileage, longer drain intervals, and less wear.


  • 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


  • Universal

What's In The Box?

  • (1) One quart bottle


  • Manufacturer Standard Warranty