Maxima (37901) Ultra4 0W-30 Synthetic Motorcycle Engine Oil - 1 Liter Bottle Ultra4 is a superior high-performance racing synthetic motor oil delivering the best in anti-shear high temperature engine protection for carbureted, fuel injected, turbocharged and supercharged engines Ultra4 has additional anti-wear and extreme pressure additives designed to protect highly modified 4-cycle engines while improving engine performance, eases cold engine starts, lengthens oil life, decreases sludge and neutralizes corrosive alkalinity Formulated for Wet clutches this 100 percent Triple Ester Blend with special detergent and dispersant additives prevents varnish and carbon deposits Ultra4 gives high performance, high-rev engines advanced protection from viscosity breakdown for all engine makes, foreign or domestic For all air-cooled and water-cooled high RPM 4-cycle racing engines, both carbureted and injected; Exceeds both JASO-MA M/C 4T and API SG/CC specs plus all manufacturer's requirements