Specifications include, but are not limited to: ENGINE OIL SAE 15W-40 Engine oils shall: 1.1 Be suitable for use in both gasoline and diesel engines (15W-40 only). 1.2 Meet or exceed performance requirements of domestic gasoline and diesel engine manufacturers. 1.3 Must meet or exceed the performance requirements of the latest American Petroleum Institute (API) category CJ-4/SN as well as earlier heavy duty engine categories. In addition, must meet Detroit Diesel 93K218 and 93K215, Mack EO-O Premium Plus 07, Caterpillar ECF-3, ACEA E-5, and E-7, Cummins CES 20081, Mercedes Benz 228.31, and the latest Volvo VDS-4 requirements. Must also meet or exceed Allison C-4, MIL-PRF-2104-G, John Deere and MAN 3275. Must be recommended for naturally aspirated, turbocharged or EGR equipped diesel engines.