Penrite Gear Oil 85W-140 is a mineral based gear oil suitable for use in both limited a slip and conventional style differentials that require API GL-5/6 and MT-1 specification fluids. Penrite Gear Oil 85W-140 is formulated with extreme pressure additives to provide maximum oil film strength for increased protection, ideal for use in heavy duty applications that are prone to high shock and heavy loads. The premium mineral base oils provide superior thermal stability while also maintaining cleanliness and reducing abrasive wear extending the oil drain interval. Penrite 85W-140 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.