Sunlube Automotive Gear Oil SAE 85W-90 is a high-quality gear lubricant formulated from refined base oils and premium sulfur-phosphorus extreme pressure additives. It provides exceptional protection against rust, corrosion, and wear across a wide temperature range. Designed for manual transmissions in passenger cars and on/off-road vehicles, it ensures smooth gear shifting and reliable performance under both high-speed/low-torque and low-speed/high-torque conditions. It is suitable for rear axle applications under light to medium duty requiring API GL-4 performance and is not recommended for heavy-duty hypoid axles unless specified by the manufacturer.