Shell Rotella® T5 15W40 synthetic blend heavy duty diesel engine oil features “Low-Saps” additive technology for increased compatibility with the latest exhaust emissions control systems. Protective power is further enhanced through the use of synthetic base oil technology while maintaining an SAE 15W40 viscosity grade. Shell Rotella® T5 meets the requirements of the major US engine manufacturers for low emission applications. Specifications, Approvals & Recommendations: API CJ-4, SM, Caterpillar ECF-3, ECF-2, Cummins CES 20081, DDC 93K218, Ford WSS-M2C171-E.