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!

$9.97
Chill Charger for water-to-air intercoolers maximizes thermal transfer to lower air intake temperatures while also protecting core corrosion, electrolysis and harmful mineral build up. By effectively transferring water that circulates through the...
$9.97
Heater Hotter formulated specifically to accelerate the transfer of heat from engine to cooling system in frigid climates that otherwise increase engine wear. Heater Hotter's unique formula allows your vehicle's heater to warm up 50% faster in even...
$9.97
Radiator Relief™ Cooling System Flush is a concentrated cleansing agent that effectively removes rust and mineral deposits left behind in the radiator core and hose lines. This advanced treatment also dissolves oily residue build-up left behind in old...
$9.97
Radiator Relief™ for Diesels 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 degrees and reduce...
As low as $9.97
Radiator Relief™™ is an excellent method of treating cooling systems as a preventive step to help avoid overheating, electrolytic (electrolysis) and chemical corrosion and is compatible with all coolant additives and anti-freeze mixtures. Both an...
$9.60
Specially formulated to enhance cooling system performance by maximizing the thermal transfer ability of the coolant/water solution or plain water. Environmentally friendly TIG Chill is safe to use in all systems and with all types of coolants.