Sunlube Automotive Gear Oil SAE 90 is a high-performance gear lubricant formulated from refined base oils and advanced sulfur-phosphorus additives. It provides outstanding protection against wear, rust, and corrosion while ensuring smooth gear shifting under both high-speed/low-torque and low-speed/high-torque conditions. Designed for manual transmissions and rear axles of passenger cars and light-duty vehicles, this oil delivers reliable performance across a wide range of operating temperatures. It is recommended where API GL-4 level protection is required and is not suitable for heavy-duty hypoid axles unless specified by the manufacturer.