Euro Gulf Robust Gear Oil 75W90 is a fully synthetic gear lubricant formulated from synthetic base oils and an advanced additive system. Euro Gulf Robust Gear Oil 75W90 is a unique fuel efficient, long life transmission and axle oil, designed to provide ultimate protection to the latest heavy duty manual transmissions and axles. Euro Gulf gives improved lubrication of the drive train, lowers the operating temperature and helps promote longer life for the equipment. Euro Gulf Robust Gear Oil 75W90 meets the API GL-5 performance level.