Penrite Pro Gear 75W-85 Gear Oil Penrite Pro Gear 75W-85 Gear Oil is a premium full synthetic manual gearbox oil manufactured from a blend of carefully selected synthetic base oils. It uses the latest technology, purpose designed additives for long service life and excellent load carrying capacity. It contains a unique viscosity modifier for stay-in-grade performance for the life of the drain. It meets the performance requirements of API GL-4 Plus as well as many manufacturer requirements. Penrite Pro Gear 75W-85 is suitable for manual gearboxes, transfer cases and transaxles in passenger cars, 4WDs and trucks that specify the use of SAE 75W-85 oils. It may also be used in place of an SAE 80 or SAE 80W-85 gearbox oil, especially to improve cold shift problems, where the lower start up viscosity will provide an easier shift. Penrite Pro Gear 75W-85 full synthetic gear oil is also ideal in vehicles that are operating in highly loaded conditions such as in competition or when towing. It may also be used in manual gearboxes and transaxles that require a SAE 75W-80. Penrite Pro Gear 75W-85 is recommended for use in Aisin 6 speed manual gearboxes used by Toyota and in Holden Commodore VE V6 and is also suitable for use in GM NV3500 and NV4500 manual gearboxes. Note: This product is not suitable for use in differentials requiring an API GL-5 specification. For these applications, please use Penrite Pro Gear GL-5 75W-85 gear oil. Not sure what oil, coolant or additive is right for your car?