MPOWER® 15W-40 Diesel CK-4 is a premium engine oil that meets or exceeds API CK-4 service in four-stroke cycle diesel engines designed to meet 2017 model year & later EPA on-highway exhaust emissions standards.
MPOWER® 15W-40 Diesel CK-4 is specially formulated to protect exhaust after-treatment devices such as diesel particulate filters (DPFs), diesel oxidation catalysts (DOCs) & selective catalytic reduction (SCR) systems. The high zinc formula provides excellent protection for older engines.
MPOWER® 15W-40 Diesel CK-4 is backward serviceable for use in pre-2017 diesel engines & is ideal for use in mixed fleets with both diesel & gasoline-fueled vehicles with both on-highway & off-road equipment operating in varying climates & under varying loads & service conditions. The low-ash formulation is designed for compatibility with all exhaust emission control systems in modern diesel engines, & to help prolong DPF life.