Cooling System Fluids (6)

DEI Radiator Relief Design Engineering Radiator Relief - Reduces Temperature - Quicker Warmup - Antifreeze Compatible - 32 oz.

Brand: Design Engineering, Inc.

Part#: 040104

2.2 fluid ounces of Radiator Relief is needed per quart of coolant.

Radiator Relief is simply the best coolant system additive on the market today. Its made for use with water or anti-freeze and is designed to function in two ways: It eliminates high temperatures in your passenger car street rod racecar RV etc. and will reduce the . . . More

DEI Radiator Relief Cooling System Flush Radiator Flush - Relief - 16 oz.

Brand: Design Engineering, Inc.

Part#: 040202

Boost your cooling system's efficiency with DEI. DEI 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 buildup left behind in old antifreeze and coolant mixtures due to . . . More

DEI Radiator Relief Coolant Additive - Radiator Relief - 16 fluid oz.

Brand: Design Engineering, Inc.

Part#: 040200

Cooler is better. Radiator Relief is simply the best coolant system additive on the market today. It's made for use with water or anti-freeze and is designed to function in two ways: It eliminates high temperatures in your passenger car, street rod, racecar, RV, etc., and will reduce the temp as much as 30 degrees F. It also provides a 50 . . . More

DEI Heater Hotter Cooling System Additive Heater Hotter - 16 oz

Brand: Design Engineering, Inc.

Part#: 040206

Reduce engine warmup time with DEI. DEI Heater Hotter is formulated specifically to accelerate the transfer of heat from the engine to the cooling system in frigid climates that otherwise increase engine wear. DEI Heater Hotter's unique formula allows your vehicle's heater to warm up 50 percent faster, even in sub-zero temperatures. It is . . . More

DEI Radiator Relief Coolant Additive for Diesels Radiator Flush - Diesels - Relief - 16 oz.

Brand: Design Engineering, Inc.

Part#: 040204

Get the most out of your diesel engine with DEI! Radiator Relief for diesels is a specially formulated performance coolant additive that is concentrated to enhance today's large-capacity diesel cooling systems, and blended for extreme use. Radiator Relief for diesels reduces the surface tension of diesel engine coolant and maximizes the . . . More

DEI Chill Charger Intercooler Additive Chill Charger Intercooler Additive - 16 oz.

Brand: Design Engineering, Inc.

Part#: 040208

Boost your forced-induction engine performance with DEI! DEI Chill Charger is a revolutionary new high performance additive to improve the efficiency of water-to-air intercoolers. Simply add Chill Charger to the intercooler reservoir, and it will enhance the thermal transfer of hot intake air to the water circulating through the intercooler, . . . More