HD 80W-90 is an Extreme Pressure lubricant for gearboxes and differentials. HD 80W-90 is suitable for all types of transmissions, synchronized or non-synchronized gearboxes, differentials, transmissions and hypoid differentials without limited slip system working with high loads and low rotation speeds or with reduced loads and high rotation speeds. Extreme pressure lubricant capable of guaranteeing effective protection The high lubricating power ensures a reduction in friction and wear. The SAE 90 viscosity grade guarantees the stability of the properties of the lubricant film even at high temperatures and under high loads, allowing a reduction in operating noise. Compatible with all types of seals and materials used in the gearbox. HD 80W-90 meets the requirements of the following sp.