Thermal Chemicals


DEI's highly acclaimed Radiator Relief line has expanded with the addition of several thermal additives designed to increase the cooling efficiency of any stock or aftermarket radiator. Reduce engine temperatures up to 30°F with new anti-foam formulas using corrosion inhibitors. Today’s gasoline and diesel powered motors aren’t as efficient as we’d like them to be but using DEI’s Radiator Relief thermal chemicals can increase the cooling systems efficiency of any vehicle by working with the radiator to lower engine operating temperatures up to 30°F! Before you upgrade to a performance fan or larger radiator try DEI Radiator Relief products. Now available for gas and diesel engines!

Radiator Relief 16oz.

$9.97
Radiator Relief 16oz. Bottle - 040200 - Design Engineering Inc

Radiator Relief™ supercharges your radiator by transferring heat more efficiently through the radiator. Similar to the original formula this proven coolant additive will reduce your operating temperature up to 30°F reducing engine wear that occurs during extreme use.

Radiator Relief™ is also formulated with a corrosion inhibitor that reduces mineral deposits. This is the first additive that maintains pH levels that otherwise fluctuate over time resulting in core damage.

  • Reduces engine temperature up to 30˚F
  • Includes anti-foaming agent
  • Formulated with a corrosion inhibitor
  • No mixing required; just add to cooling system!
  • Reduces pre-existing scale build-up
  • Safe with all alloys
  • Compatible with water and all types of anti-freeze products
  • 100% Biodegradable, Non-Corrosive and Non-Toxic Additive
  • For use in all water cooled engines
  • Contains No Glycol

Product FAQ

$9.97