Certified by NMMA, approved TC-W3 lubricant, designed specifically for marine applications. Higher additive concentration than required to protect outboard engines under the most severe operating conditions. Contains only ashless components to prevent preignition and spark plug fouling, and protect against deposits, rust, and corrosion. Resists gel formation and wall scuffing. Mixes easy with gas, dyed blue for easy detection. Also for oil injection systems and applications calling for NMMA TC-W, TC-WII, or TC-W3. Meets warranty requirements of outboard engines by Evinrude, Johnson, Mercury, Mariner, US Marine/Force, Sears, Suzuki, and Yamaha. Exceeds NFPA Code 30 Class IIIB liquids flash point limits.