Design Engineering Dei Radiator Relief Coolant

Design Engineering (DEI) Radiator Relief coolant treatment is made to help control high engine temperatures. It improves heat transfer through the radiator, so it suits street, performance, and hard-use cooling systems. Use it as a preventive step against overheating, electrolysis, and chemical corrosion.

Key Features:

• Lowers coolant operating temperatures by up to 30°F
• Improves heat transfer through the radiator and cooling system
• Includes an anti-foaming agent and a corrosion inhibitor
• Helps reduce mineral deposits and pre-existing scale build-up
• Compatible with water and all types of antifreeze and coolant mixtures
• Safe for radiator materials including cast iron, copper, brass, and aluminum
• Made in the U.S.A.

Less heat stress means less engine wear during extreme use. The additive needs time to cycle and mix with the existing coolant before it takes full effect. It won't repair a malfunctioning thermostat. Use the DEI Radiator Relief variant that suits your cooling system.