Design Engineering Radiator Relief Cooling System Flush 16 oz — Restores Coolant Flow, Removes Rust & Scale

Design Engineering Radiator Relief Cooling System Flush is a 16 oz professional-strength treatment that dissolves rust, scale, and sludge to restore coolant flow and radiator efficiency.

Left unchecked, deposits inside radiators and cooling passages reduce heat transfer and raise the risk of overheating. This concentrated formula is designed to clean internal passages in passenger cars, trucks, marine engines, and light industrial equipment while remaining compatible with common antifreeze types and radiator metals. Use as part of scheduled maintenance or when diagnosing cooling system performance issues.

How does this flush improve cooling performance?

The treatment targets mineral scale, rust, and sludge that impede coolant circulation and heat exchange. By removing those obstructions, flow is restored and the radiator can dissipate heat more effectively, which helps stabilize engine temperatures under load.

• Dissolves corrosion and mineral deposits that restrict coolant pathways
• Restores proper coolant flow through radiator, heater core, and passages
• Improves heat transfer for more consistent operating temperatures
• Helps reduce overheating incidents caused by internal blockages

Is it safe for my radiator and coolant type?

Yes — the formula includes corrosion inhibitors and anti-foaming additives to protect metals and components while balancing pH. It’s formulated to be compatible with cast iron, aluminum, copper, and brass radiators and with ethylene- and propylene-glycol based antifreeze blends.

• Safe with common coolant mixtures and concentrations
• Protects metal surfaces and seals from acidic attack
• Contains anti-foam agents to prevent air pockets during circulation
• Suitable for automotive, marine, and light industrial cooling systems

How do I use the 16 oz bottle — what’s the dosage and procedure?

Dosage is straightforward: follow the recommended ratio and run the engine to circulate the cleaner through the system. After the flush cycle, drain and refill with fresh coolant according to the vehicle manufacturer’s guidelines.

• Recommended dose: roughly 1 oz per quart of coolant (adjust to system capacity)
• Add to radiator or coolant reservoir with engine cold, then run to operating temperature
• Drain, flush with water if needed, and refill with the correct coolant mix
• Repeat service intervals as part of routine cooling system maintenance

Will this help prevent future buildup and corrosion?

Beyond breaking down existing deposits, the product leaves behind corrosion inhibitors that slow future formation of rust and scale. Regular application as directed can reduce the frequency of deep-clean interventions and help prolong component life.

• Neutralizes acidic residues and helps maintain stable pH
• Deposits corrosion inhibitors to protect metal surfaces
• Reduces mineral-scale reattachment after cleaning
• Can extend maintenance intervals when used as recommended

Who is this for: Design Engineering Radiator Relief Cooling System Flush is aimed at DIY enthusiasts, fleet technicians, marine operators, and anyone responsible for maintaining engine cooling systems. It’s appropriate for vehicles and equipment that need internal cleaning to address overheating symptoms, slow warm-up issues, or routine preventative maintenance. Use it when performing radiator service or as part of seasonal coolant changes to keep cooling systems running efficiently.