Mercury Premium Plus TC-W3 2-Stroke Marine Engine Oil 858026K01 provides outstanding wear and corrosion protection to help extend the life of hard-working marine engines. This advanced synthetic blend formula is ideal for use in oil-injected, carbureted or electronic fuel injected (EFI) mid- to high-horsepower 2-stroke outboards. Continued use of Premium Plus helps reduce corrosion and carbon build-up and maintain peak engine performance even under extreme conditions, including extended full-throttle operation, high speeds and heavy loads. It meets all outboard and personal watercraft manufacturer recommendations for use of NMMA TC-W3 oils in premix or oil-injected 2-stroke applications.