Mag 1, qt, 10w40 atv synthetic engine oil, high performance, specially formulated to maximize power sports & racing competition, meets jaso-ma for wet clutch protection & smooth positive shifting, designed for maximum protection at high rpm's where shock loads are high, virtually eliminating wear & scuffing on vital engine components, anti-rust protection & performance exceeding the nmma 4 stroke watercraft engine specifications, exceeds us & import requirements for all 4 stroke gasoline engines, meets api si, jaso ma, jaso ma-2, iso-l-ema2 is specified, provides excellent protection in all conditions even under the most grueling racing conditions.