Red Line Supercool® Concentrate, 1 gallon

Item number: 81215
  • Maximizes cooling system performance with superior protection against cavitation corrosion/erosion.
  • Enhances heat transfer, reducing operating temperatures by up to 20°F.
  • FOR ALL MAKES / ALL MODELS / ANY COOLANT COLOR: Cars, SUVs, and minivans; Trucks: Light and Medium Duty.
  • 5 year / 150,000 mile protection.
  • Compatible with gas and diesel engines.
  • Safe for cast iron, aluminum and brass systems.
  • See product information sheet for additional information (link below).
  • Must be diluted with water - distilled water highly recommended.



  • Reduces or eliminates bubbles or vapor barrier that form on hot metal surfaces to reduce coolant temperatures by up to 20°.
  • Superior heat transfer properties compared to glycol-based antifreeze.
  • Compatible with new or used antifreeze (including DEX-COOL® and long-life versions) to improve the heat transfer of ethylene and propylene glycol systems.
  • Improves heat transfer and reduces cylinder head temperature.
  • Designed for use with all modern aluminum, cast iron, copper, brass and bronze cooling systems.
  • Cleans and lubricates water pump seals.
  • Reduces cavitation and complexes with hard water to reduce scaling.
  • Does not lower cooling system below the thermostatically-controlled temperature.