Sunlube Automotive Gear Oil SAE 75W-90 is a high-performance gear lubricant formulated from highly refined base oils and advanced sulfur-phosphorus extreme pressure additives. It provides superior protection against rust, corrosion, and wear under a wide range of temperature and service conditions. This oil is recommended for manual transmissions in passenger cars and on/off-road vehicles operating under high-speed/low-torque or low-speed/high-torque conditions. It can also be used as a rear axle lubricant under light to medium-duty service where API GL-4 performance is required. It is not recommended for heavy-duty hypoid axles operating under extreme load conditions unless specified by the manufacturer.