75W-80 GL4 is a semi-synthetic gear oil formulated with high-quality synthetic and mineral base oils. It contains additives that provide high-pressure resistance, prevent oxidation of the oil, protect materials from rust, and reduce wear. Designed for heavy-duty conditions, it is suitable for differential, manual transmission, and hypoid gears. This oil is specifically formulated for equipment with hypoid gears operating under high-speed/impact loads, high-speed/low-torque, and/or low-speed/high-torque conditions. It is used in heavy-duty axles and final drive axles that require API GL-5 level performance, light and heavy-duty trucks, commercial vehicles, and industrial, commercial, and automotive applications with gears operating under medium to heavy working conditions.