strict required marine system oil; detergency, dispersive, acid neutralizing and AO, AW, anticorrosive and antirust properties. MARINE CRANKCASE OIL(SYSTEM OIL) COMPOUND ADDITIVE SGMS22 SDS This additive is made for strict required marine system oil, it's composited by excellent detergent, dispersant, AO and anticorrosion etc. It has outstanding detergency, dispersive, acid neutralizing and AO, ...