Premium Plus blend is the most advanced oil yet formulated for conventional 2 stroke outboards. Blended to exceed TC-W3 certification, it contains extra dispersants and detergents, this is the best possible protection against the adverse effects of low quality fuel. Defends engines against carbon and harmful deposit build up. Improves engine efficiency, fights corrosion, extends spark plug life and burns cleaner. Formulated for added engine protection in extreme conditions. Offers extreme protection for mid- to high-horsepower outboard engines. Continued use of this oil will provide outstanding wear and corrosion protection which help extend engine life, minimize performance-robbing carbon deposits & maintain peak engine performance and reliability. Recommended for use in oil-injected, carbureted or electronic fuel injected (EFI) mid- to high-horsepower engines such as Mercury®, Mariner®, and Force® outboards, Mercury Jet Drives® and Mercury Sport Jet® engines.