NMMA-approvedPremium Plus Synthetic Blend TC-W3 Oilmeets or exceeds the most stringent engine manufacturer warranties, including Johnson/Evinrude, Mercury Marine, Yamaha, Suzuki, Nissan, Force/US Marine, Mariner, and others. Protects against piston scuffing and ring sticking in high-performance 2-cycle engines. Keeps spark plugs and exhaust ports clean in both premix and injection systems. Meets or exceeds NMMA requirements and most engine manufacturers warranties.Key FeaturesContains ashless additives and cleaners to prevent preignition, plug fouling, deposits, rust and corrosionNMMA and outboard engine manufacturer-approved