TC-W3 is a high performance lubricant. Meets and exceeds all (Domestic & Import) engine manufacturers’ warranties including Johnson/Evinrude E-Tec. Exceeds JASO, ISO, API & NMMA, for advanced generation 2 cycle lubricant. Guaranteed & backed by Sierra’s comprehensive warranty. (Will not void engine manufacturer’s warranty). Ideal for oil injection systems or pre-mix applications.