Yamaha LUB-2STRK-M1-04 Yamalube 2M Marine 2-Stroke Oil NMMA TC-W3 Gallon; LUB2STRKM104 Made Yamalube 2-Stroke Outboard semi-synthetic engine oil NMMA TC-W3 formulation Superior anti-wear and anti-corrosion protection Not recommended for land based products, WaveRunner or Sport Boats. Genuine OEM Yamaha