Design Engineering Radiator Relief Cooling System Flush 16 oz - Cleans Rust & Scale, Protects Metals

Over time cooling systems collect rust, mineral deposits, and oily residues that narrow coolant passages and degrade thermal performance. This 16-ounce concentrate from Design Engineering (DEI) is formulated to clean the radiator, heater core, and internal passages, then be drained away so you can refill with fresh coolant. The product is compatible with common coolant chemistries and radiator materials, making it a straightforward option for routine maintenance or when diagnosing overheating and poor heater performance.

How does this flush clear rust and scale inside my radiator?

The chemical formulation targets and loosens rust, scale, and sludge so they can be flushed out with the cooling system fluid. It works within minutes of circulation and is designed to break deposits into removable particles without aggressive acid attacks on metals.

• Contains agents that dissolve oxidation and mineral buildup.
• Includes corrosion inhibitors to buffer metal surfaces during cleaning.
• Anti-foaming components keep circulation effective while flushing.

Is it safe for different radiator materials and coolant types?

Yes — Radiator Relief is formulated to be compatible with cast iron, aluminum, copper, and brass radiators. It also works with ethylene glycol and propylene glycol based antifreeze blends, allowing use across automotive, marine, and light industrial cooling systems.

• Safe for common coolant mixtures and additive packages.
• Non-damaging to seals and hoses when used as directed.
• Balanced pH and corrosion inhibitors help protect metals during treatment.

How do I use this product for best results?

Application is simple: add the recommended dose to the radiator or coolant reservoir, run the engine to circulate the solution, then drain and flush the system before refilling. Follow the usage rate of approximately 1 oz per quart of coolant for effective cleaning without over-concentration.

• Pour into a cold radiator or overflow reservoir before starting the engine.
• Run engine until the thermostat opens and allow circulation for the specified time.
• Drain, flush with water as needed, and refill with fresh coolant mixture.

Will regular use prevent future corrosion and overheating?

Using a cleaning treatment as part of scheduled maintenance reduces buildup that restricts coolant flow and heat exchange. While no product guarantees permanent prevention, regular flushing and correct coolant service extend component life and lower the chance of overheating caused by internal deposits.

• Helps maintain efficient coolant circulation and heat transfer.
• Removes deposits that can harbor corrosion and block passages.
• Supports longer service intervals and fewer emergency repairs.

Who is this for: Design Engineering Radiator Relief Cooling System Flush is aimed at vehicle owners, DIY mechanics, and professional technicians who need a reliable cleaning treatment for gasoline and diesel cooling systems. It fits drivers maintaining passenger cars, light trucks, boats, and equipment with mixed-metal radiators who want a safe, easy-to-use flush to restore cooling performance and protect components during cleaning.