Sierra - Full Synthetic TC-W3 2 Stroke Outboard Engine Oil - Gallon - 95403. 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.. Features:. Size - Gallon. Significantly reduced aquatic toxicity to fish compared to other outboard oils. Reduces ring sticking, deposit formation and exhaust port blockage. Improve performance and extend engine life by reducing wear. Ideal for high horsepower outboards that demand maximum performance