A unique product with the viscosity of 75W90 gear oil but lower internal friction similar to that of an ATF. Used when temperatures are not high and when the maximum power output is required such as in stock car qualifying laps. Used in two-stroke and four-stroke motocross transmissions (often mixed in equal parts with LightWeight ShockProof™ Gear Oil). Used in 80cc and 125cc shifter kart transmissions. Used in low-power road racing transxles like Formula Vee and low-power SCCA Production classes (dog-ring type, generally not sycro application where this product can be slippery).