100% Synthetic lubricant for mechanical transmission. This product was specially designed for high performances and racing cars fitted with mechanical transmission, synchronized or not, differential, transfer gearboxes and hypoid differentials without limited slip system operating under shocks, heavy loads and low revolution speed or moderate loads and high revolution speed requiring API GL-5 standards. This product is an synthetic extreme pressure lubricant for an efficient anti-wear protection, a better resistance at high temperature and a longer life time. Its very high lubricating power decreases friction and wear and lower the effort made on the lever to switch gears even when it is cold. Contains a special friction modifier to avoid noisy or dragging limited slip differential. Offers improved transmission efficiency compare to a 75W-140 grade. It ensures 0% shear loss : Unshearable oil film in extreme conditions. Suitable for any type of seal and yellow material used in gearboxes design.