Design Engineering Radiator Relief Coolant Additive | Engine Coolant for Cars, Trucks, RVs, Motorcycles & More | Radiator Coolant Reduces Engine Temps Up to 30°F |32 oz.
Price: $26.49
(as of Jun 29, 2025 15:19:52 UTC – Details)
Introducing Design Engineering Radiator Relief Coolant Additive, a powerful engine coolant enhancer designed to lower operating temperatures by up to 30°F, helping prevent overheating and protect your engine under demanding conditions. Radiator Relief is formulated to work with all types of coolant and antifreeze mixtures, making it compatible with a wide range of vehicles and radiator materials including cast iron, copper, brass, and aluminum. This additive features a unique combination of an anti-foaming agent and corrosion inhibitors that combat electrolytic and chemical corrosion, helping to extend radiator life and maintain optimal cooling system performance. By improving heat transfer efficiency, Radiator Relief reduces engine wear and overheating risks during intense or prolonged use. Additionally, it stabilizes pH levels to prevent damage to radiator cores and reduces mineral deposits that can cause scale buildup. Easy to use, simply add 1 ounce per quart of coolant to your radiator or coolant reservoir for effective protection and enhanced cooling system efficiency. Trust Design Engineering Radiator Relief to keep your engine running cooler and more reliably, whether for daily driving, performance use, or heavy-duty applications.
LOWERS ENGINE TEMPERATURES – Radiator Relief lowers engine temperatures by up to 30°F, helping your vehicle run cooler and more efficiently in hot weather. This can reduce engine wear and enhance performance, making it ideal for any water-cooled engine.
PREVENTS OVERHEATING AND CORROSION – This engine coolant helps prevent overheating and combats both electrolytic and chemical corrosion. It also reduces existing scale buildup, acting as a corrosion inhibitor to keep your engine running longer.
PROTECTS AGAINST RADIATOR CORE DAMAGE – Our radiator coolant is specially formulated to reduce engine mineral buildup, helping prevent core damage. The first additive to maintain stable pH levels, preventing harmful fluctuations that damage your engine.
VERSATILE COMPATIBILITY – This additive features an anti-foaming agent and is compatible with all types of antifreeze coolants. It’s safe to use with any radiator material, including cast iron, copper, brass, and aluminum.
EASY AND SAFE TO USE – With a non-toxic, non-corrosive formula, Radiator Relief coolant additive is safe for use in cars, trucks, RVs, ATVS, snowmobiles, and motorcycles. Just add 1 oz per quart of coolant for optimal results.
Customers say
Customers report that the coolant additive effectively lowers engine temperatures, with one mentioning it reduces them by up to 30°F. The product receives positive feedback for its functionality, with one customer noting it works better than Water Wetter.
