The Citgo Petroleum Mystik JT-7 SAE 85W-140 Gear Oil is a superior gear oil designed to provide superior extreme pressure protection, minimum gear wear and excellent deposit control. It is formulated to improve rust and corrosion protection under extreme service conditions, making it ideal for use in differentials of passenger cars, trucks and heavy duty equipment. this gear oil is designed to provide superior protection and performance in extreme conditions, ensuring your vehicle is running smoothly and efficiently. FleetPride is your First Click in Heavy Duty®.