SINOPEC CI-4 Diesel Engine Oil, the latest generation diesel engine oil, is designed especially for heavy-duty diesel engines with EGR system. It possesses premium performances in controlling the increase of insoluble product, viscosity retention and sludge formation in oil sump, which are derived from the introduction of EGR emission system. This oil exceeds the API CI-4 specification, meets ACEA E5, B4, It bears major OEM’s certifications, such as MB 228.3, Volvo VDS3, Cummins CES 200077/200078, MAN 3275 and Mack EOM+MTU.