Product Details: Achieve maximum engine protection so your truck can be Ready for the Road Ahead™, with the Shell Rotella® T6 Full-Synthetic Heavy Duty Diesel Engine Oil. To defend against oxidation and resist oil breakdowns, this replacement formula is designed with a specialized mix of quality base elements. Fashioned to keep your motor in prime condition by sealing microscopic spaces, leading to better fuel economy and reduced engine wear. <br/><br/>FleetPride is your First Click in Heavy Duty®.