Pennzoil Marine Premium Plus Outboard 2-Cycle oil is a premium oil specially designed for 2-cycle gasoline marine applications and formulated to help protect outboard engines under the most severe operating conditions. Certified by the National Marine Manufacturer s Association (NMMA) as an approved NMMA TC-W3 lubricant this synthetic blend oil helps protect against piston scuffing ring sticking and only contains ashless components that helps prevent any lubricant-related preignition and spark plug fouling. Compatible with outboard motors made by Johnson/Evinrude Mercury Marine Yamaha Suzuki Nissan Force/US Marine Mariner Sears and All other manufacturers requiring NMMA TC-W3 oil.