Penrite Trans Gear 75W-80 is a premium semi-synthetic gear oil suitable for use in manual transmissions and transaxles that require API GL-4 and GL-4 Plus specification fluids. Penrite Trans Gear 75W-80 is formulated with semi-synthetic base oils and modern technology additives to provide excellent wear protection, extended service life and increased cold temperature performance. The oxidation stable formula will help to keep harmful deposits from forming and to assist in maintaining oil and component cleanliness. Trans Gear 75W-80 is also ideal for older manual transmissions that generally require automatic transmission fluid is used as well as vehicles that are experiencing problems with smooth shift performance. 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.