Winter-Pruf® Antifreeze

Winter-Pruf® is the perfect solution to winterize any potable water system.  Winter-Pruf® brand antifreeze is made from materials generally recognized as safe (GRAS) by the United States government, and provides burst protection to -50°F when label directions are followed.  This product is safe to use in drinking water systems for winter storage to prevent frozen lines, and has a wide array of applications.  Also available in ready-to-use -100° formula and -50° Concentrate.

  • Lubricates seals and gaskets
  • Safe for marine engine blocks

  • Will not harm plastic, copper, brass, or steel plumbing
  • Non-toxic formula



  • 5 gallon containers
  • 55 gallon drums
  • 275 gallon tote tanks


Recommended for:

  • Marine Vehicles
  • Recreational Vehicles