EP90 Gear Oil GL4 is a Sulphur/Phosphorus SAE 90 Gear oil with extreme pressure additives. Used in Hypiod rear axles, differentials gear boxes, steering boxes and other heavily loaded gears fitted to all types of vehicles from when idle. Economical in use due to long life characteristics. EP90 Gear Oil GL4 protects bearings and gear teeth in severe working conditions. Protects against rust and corrosion even when idle.