Penrite Pro Gear 75W-90 is a premium full synthetic multipurpose gear oil suitable for use in differentials, both limited slip and conventional as well as manual transmissions that require API GL-5/6 and MT-1 specification fluids. Penrite Pro Gear 75W-90 is formulated with full synthetic base oils that also include PAO and ESTER to provide excellent shear stability and wear protection, increased film strength and thermal stability, extending the oil drain interval. Pro Gear 75W-90 is ideal for use in high performance, severe service applications such as those subjected to high temperatures or heavy loads as it wont break down prematurely like conventional mineral oils may. The oxidation stable formula will help to keep harmful deposits from forming and to assist in maintaining oil and component cleanliness. Pro Gear 75W-90 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.