100% synthetic lubricant for mechanical transmission This product was specially designed for high-performance and racing cars fitted with mechanical transmissions, synchronized or not, differentials, transfer gearboxes, and hypoid differentials without a limited slip system operating under shocks, heavy loads and low revolution speed, or moderate loads and high revolution speed requiring API GL-4 and GL-5/MIL-L-2105D standards. This product is a synthetic extreme pressure lubricant for efficient anti-wear protection, better resistance at high temperatures, and a longer life. It's very high lubricating power decreases friction and wear and lowers the effort made on the lever to switch gears even when it is cold. This viscosity grade (90) helps provide outstanding oil film resistance at hot temperatures and/or reduce transmission noise. It ensures 0% shear loss : unshearable oil film in extreme conditions. Suitable for any type of seal and yellow material used in gearbox design