UNI B 15W/40 CK-4/E9/SN Semi Syn engine oil is particularly suited to mixed fleet use in: 2017+ model year heavy duty diesel engines. Diesel engines (Turbocharged and naturally aspirated) It is suitable for use in high speed 4-stroke diesel engines and is compatible with diesel engines fitted with an EGR. It is also compatible with the latest exhaust after treatment systems such as; DPF, DOC and/or SCR Petrol engines (Leaded and Unleaded fuels) LPG fuelled engines For all types of trucks, earthmoving equipment, stationary engines, cars and light commercials where a CK-4 or CJ-4/E9 diesel rating or SN petrol rating (and below) is required. It is suitable for use in high speed 4-stroke diesel engines and is compatible with diesel engines fitted wi