Specially- formulated, pre-diluted, full-fill, low silicate coolant for aluminum motorcycle/ snowmobile/ATV engines and radiators. For use in all machines with a water- cooling system, Year-Round is designed to prevent vapor-lock and corrosion, and can actually enhance your cooling system. Sold by the quart. Ships via ground transportation in USA lower 48 states only, air shipping not available due to air regulations. We are not able to ship internationally or to Canada due to shipping regulations.