Blended with the highest-quality ashless dispersants, this advanced synthetic-blend formula maintains peak performance under strenuous conditions, such as continuous high speed and heavy loads. This TC-W3 certified oil burns cleaner, maximizes performance, and is strong enough for high-horsepower outboard engines such as Mercury OptiMax and other direct fuel-injected (DFI) engines. Recommended for use in liquid-cooled, 2-cycle engines with oil injection systems or for premix which require a TC-W3 oil. Burns cleaner and maximizes performance Recommended for liquid-cooled 2-cycle engines | Premium Plus 2-Cycle TC-W3 Outboard Oil, Pint