Differentials & Manual Transmissions, axles and transfer boxes in passenger, commercial and construction vehicles. Greyhound™ G-Moto Gear Oil EP90 GL5 gear oil is a universal gear oil used for lubrication of reducers of rolling mills, mechanical transmissions with all types of gears including hypoid (drive axles, transfer cases, etc) of cars, trucks and tractors, metallurgical equipment, which operate under severe conditions, where API GL-5 levels are required. Specifications: API GL-5, SAE 90 Greyhound Full Gear Oil Range