Virginoil sae 15w-40 api cj-4 heavy duty diesel formula Oil is a premium diesel engine oil engineered to meet the latest requirements for egr / epf engines. It is recommended for naturally aspirated, turbocharged or supercharged diesel, gasoline, or propane engines and offers the ultimate in protection against wear, improved performance and greater fuel economy. It outperforms conventional motor oil and meets or exceeds the (api) american petroleum institute cj-4 / sm service classification as well as prior api specifications for ci-4 plus, ci-4, ch-4, cg-4, cf-4, cf-2, cf and api sl, Sj, and sh. It meets or exceeds oem specifications, mack eo-o premium plus, cummins ces 20081, detroit diesel pgos 93k218 and volvo vds-4, caterpillar ecf-1a, 2 and 3, mb 228.3, acea e7, and mtu type ii standards.