PETRON REV-X RX800 (ALL TERRAIN) with DC Tech is the top-tier diesel engine oil formulated for high performance heavy duty diesel vehicles. It contains a superior additive system specially designed to improve protection of engine and advanced emissions control system including Diesel Particulate Filters (DPF) and Exhaust Gas Recirculation (EGR). Viscosity Grade: SAE 5W-40 Approved and certified according to the specifications of the following: API CJ-4/SM, Cummins CES 20081, MB Approval 228.31 It also meets the requirements of: ACEA E7/E9-08, Caterpillar ECF-2/ECF-3