This 75W-90 Full Synthetic Gear Oil delivers unmatched protection for gears, differentials, and manual transmissions under extreme pressure and heat. Engineered with API GL-5 performance, it resists oxidation, foaming, and wear while improving fuel efficiency. Perfect for passenger cars, trucks, and heavy-duty equipment. Includes three (3) 1-quart bottles deal for quick refills, easy storage, and reliable performance. Trusted by professionals for smooth operation in all climates.