Friction is a killer to your moving parts. Our Synthetic Plus by Schaeffer's Oil is engineered to reduce friction with superior lubrication. Studies show it reduces your operating temperatures by up to 35%* and reducing wear as much as 25%*. Less friction means better fuel economy. There's nothing like it that will add miles to the adventure.
Each differential requires 3 quarts of oil.
Ford Superduty rear differentials require a minimum of 4 quarts.