SA Lube's Castrol Super Outboard Plus is a superior performance, mineral-based oil designed to provide excellent lubrication of all two-stroke oil-injected and premix outboard engines. Castrol Super Outboard Plus is also suitable for water-cooled two-stroke jet skis. Super Outboard Plus is NMMA Certified for service TC-W3 at the engine manufacturers recommended fuel/oil ratio. (4 x 5 Litres)