LUBRIGUARD Heavy Duty Full Synthetic SAE 5W-40 CK-4/SN Heavy Duty Diesel Engine Oil is a licensed API Service Classification CK-4 and meets API Service Classifications CJ-4, CI-4 PLUS, CI-4, CH-4/SN. It has received OEM Approvals for Mack EOS-4.5, Volvo VDS-4.5, Renault RLD-4, Cummins CES 20086, Ford WSS-M2C171-F1 and Detroit Diesel DFS 93K222. It is recommended for use in applications calling for Mack EO-O Premium Plus, EO-N, Volvo VDS-4, VDS-3, Caterpillar ECF-3, ECF-2, Cummins CES 20081, Detroit Diesel DFS 93K218, Daimler MB 228.31, MAN M 3775, MTU Category 2.1, Renault RLD-3, ACEA E9 and E7.