Maxima CS13901-12PK Ultra4 0W-10 Synthetic Motorcycle Engine Oil - 1 Liter Bottle, (Case of 12) 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 antiwear 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 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 specification plus all manufacturers requirements