Premium Plus Blend is the most advanced oil yet formulated for conventional 2-Stroke outboard engines. Blended to exceed TC-W3 certification requirements and containing extra dispersants and detergents, this is the best possible protection against the adverse effects of low-quality fuel. Premium Plus Blend defends your engine against carbon build-up and reduces harmful deposits. It improves engine efficiency, fights corrosion, extends spark plug life and burns cleaner.