Sierra Oil Tcw3 Prem 2 Cycl O B Gal 6High performance lubricant that has been manufactured and designed to meet and exceed all (Domestic & Import) engine manufacturers warranties. Exceeds JASO, ISO, API and NMMA, for advanced generation 2 cycle lubricants. Optimum burnability for smokeless combustion. Runs cleaner, burns cleaner. Significantly reduced aquatic toxicity to fish compared to other outboard oils on the market today. Max lubrication and detergency allows engine to run smoother