SM/CI-4
SM refers to oil suitable for PETROL engines. SM - are designed tp provide improved oxidation resistance, improved deposite protection, better wear protection, and better low-temperature performance over the life of the oil.
CI-4 refers to oil suitable for DIESEL engines. CI-4 performance requirements describe oils for use in those high speed, four-stroke cycle diesel engines designed to meet 2004 exhaust emission standards. Optimum protection is provided for control of corrosive wear tendencies, low and high temperature stability, soot handling properties, piston deposit control, valve train wear, oxidative thickening, foaming and viscosity loss due to shear.
