Penrite Pro Gear GL-5 75W-85 is a premium, full synthetic, high performance gear oil suitable for use in both limited a slip and conventional style differentials and transaxles that require API GL-5 specification fluids. Penrite Pro Gear GL-5 75W-85 is formulated with full synthetic base oils and an advanced additives package to provide excellent shear stability and wear protection as well as increased film strength and thermal stability, extending the oil drain interval. The oxidation stable formula will help to keep harmful deposits from forming and to assist in maintaining oil and component cleanliness. Pro Gear GL-5 75W-85 also contains the correct amount of Limslip additive for use in limited slip differentials therefore, requiring no extra additives. To find the manual transmission or diff oil suggested for your vehicle; either add your vehicle to My Garage or check with your manufacturer, vehicle user manual, your local mechanic or head in-store and talk to one of our friendly team.