Premium Plus TCW3 2-Stroke Oil is for use in oil-injected, carbureted or electronic fuel injected (EFI) mid- to high-horsepower engines. It is an advanced proprietary formula is designed for all 2-Stroke outboard engines applications and is specifically formulated to meet the demand of high horsepower engines. Blended with quality ashless dispersements, this advanced formula maintains peak engine performance even under severe conditions such as extended full throttle, high speed, heavy load and ""out-of-the-whole"" acceleration. Continued use of Quicksilver Premium Plus 2-Stroke Outboard oil will help reduce corrosion and carbon build-up while providing superior lubrication for internal engine components. Meets all outboard and personal watercraft manufactures' recommendations for use of NMMA TC-WII or TC-W3 oils in premix or oil-injected 2-Stroke applications. It is a NMMA TC-W3 Certified Oil.