Best Engine Coolant Flush Cleaner of 2026

Last updated on 07/01/2026
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1
Irontite Thoro-Flush Coolant System Cleaner - Removes Rust, Scale, Oil, Sludge & Gelled Dex-Cool - 16oz Powder - Cleans Cooling Systems, Restores Coolant Flow, Safe for Cast Iron, Aluminum & Plastic
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Irontite Thoro-Flush Coolant System Cleaner - Removes Rust, Scale, Oil, Sludge & Gelled Dex-Cool - 16oz Powder - Cleans Cooling Systems, Restores Coolant Flow, Safe for Cast Iron, Aluminum & Plastic

IRONTITE
9% Off
Why we love it
  • Powerful rust and sludge removal.
  • Restores cooling system efficiency.
  • Industrial-strength for heavy-duty cleaning.
Main Highlights
  • Powerful Cooling System Cleaner: Thoro-Flush effectively removes rust, scale, grease, oil, and sludge from your vehicle’s cooling system, restoring optimal coolant flow and preventing overheating.
  • Clears Gelled Dex-Cool: Specially designed to break down and remove gelled Dex-Cool antifreeze, Thoro-Flush restores proper coolant flow and prevents engine damage caused by clogged systems.
  • Compatible with Multiple Materials: Safe to use on cast iron, aluminum, brass, and plastic, Thoro-Flush is ideal for all types of engine cooling systems, ensuring thorough cleaning without damage.
  • Prevents Overheating and Blockages: Regular use of Thoro-Flush helps clear out debris that blocks coolant flow, improving temperature regulation and reducing the risk of overheating or cooling system failure.
  • Easy-to-Use Powder Formula: Simply add the concentrated Thoro-Flush powder to your cooling system for a quick and efficient flush. One 16 oz bottle treats up to a 6-gallon cooling system for maximum value.
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9.8
Exceptional
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9.8
Exceptional
IRONTITE

Irontite Thoro-Flush Coolant System Cleaner - Removes Rust, Scale, Oil, Sludge & Gelled Dex-Cool - 16oz Powder - Cleans Cooling Systems, Restores Coolant Flow, Safe for Cast Iron, Aluminum & Plastic

9% Off
Why we love it
  • Powerful rust and sludge removal.
  • Restores cooling system efficiency.
  • Industrial-strength for heavy-duty cleaning.
Main Highlights
  • Powerful Cooling System Cleaner: Thoro-Flush effectively removes rust, scale, grease, oil, and sludge from your vehicle’s cooling system, restoring optimal coolant flow and preventing overheating.
  • Clears Gelled Dex-Cool: Specially designed to break down and remove gelled Dex-Cool antifreeze, Thoro-Flush restores proper coolant flow and prevents engine damage caused by clogged systems.
  • Compatible with Multiple Materials: Safe to use on cast iron, aluminum, brass, and plastic, Thoro-Flush is ideal for all types of engine cooling systems, ensuring thorough cleaning without damage.
  • Prevents Overheating and Blockages: Regular use of Thoro-Flush helps clear out debris that blocks coolant flow, improving temperature regulation and reducing the risk of overheating or cooling system failure.
  • Easy-to-Use Powder Formula: Simply add the concentrated Thoro-Flush powder to your cooling system for a quick and efficient flush. One 16 oz bottle treats up to a 6-gallon cooling system for maximum value.
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Value for Money
2
Wynn's Commercial Vehicle Cooling System Flush - Powerful Acid-Free Cleaning for Limescale, Corrosion & Sludge Removal - Safe for Cooling System Materials - Compatible with OAT Coolant - 1L

Wynn's Commercial Vehicle Cooling System Flush - Powerful Acid-Free Cleaning for Limescale, Corrosion & Sludge Removal - Safe for Cooling System Materials - Compatible with OAT Coolant - 1L

Wynn's
Why we love it
  • Removes stubborn cooling contaminants.
  • Restores system performance efficiently.
  • Safe for all system materials.
Main Highlights
  • ✅ DEEPLY CLEANS AND RESTORES COOLING SYSTEM PERFORMANCE: This concentrated cooling system flush is expertly formulated to thoroughly cleanse all types of commercial vehicle cooling systems by removing accumulated contaminants. Over time, limescale deposits, corrosion, sludge, and oil residues build up inside cooling circuits, reducing efficiency and causing overheating risks. This product penetrates deeply to dissolve and flush out these stubborn deposits, restoring the cooling system’s optimal functionality.
  • ✅ DUAL ACTION FORMULATION TARGETING LIMESCALE AND CORROSION: The solution features a dual-action formula that specifically targets the two primary causes of cooling system degradation. First, it effectively dissolves limescale deposits, which result from mineral buildup in the coolant over time. Second, it aggressively eliminates corrosion, sludge, and oil residues, which can accumulate from system wear and external contaminants. This combination ensures that both inorganic and organic contaminants are removed, leading to a cleaner system with restored coolant flow and heat exchange efficiency.
  • ✅ SAFE AND COMPATIBLE WITH ALL COOLING SYSTEM MATERIALS: The cooling system flush is specially formulated to be completely safe for all materials commonly found within vehicle cooling circuits. It does not contain aggressive acids, thus protecting rubber hoses, seals, and various metals such as aluminum, steel, and copper from corrosion or degradation during the cleaning process. This makes it suitable for use in any commercial vehicle cooling system regardless of the coolant type, including modern OAT (Organic Acid Technology) coolants.
  • ✅ HIGH PERFORMANCE IN ALL CLOSED-CIRCUIT COOLING SYSTEMS: Engineered for maximum effectiveness, this cooling system flush excels in all closed-circuit cooling systems used in commercial vehicles. These systems require specialized cleaning agents to penetrate complex channels and remove contaminants without compromising system components. The product’s concentrated nature enables it to deliver powerful cleaning action in a single treatment, restoring proper coolant circulation and heat dissipation.
  • ✅ ACID-FREE FORMULATION FOR PROTECTED AND EFFICIENT CLEANING: Unlike many other radiator cleaners that rely on strong acids, this cooling system flush employs an acid-free formula that balances effective cleaning power with system safety. The absence of acids reduces the risk of corrosion and damage to sensitive components, providing a gentler yet thorough cleanse. This ensures that internal surfaces are cleared of deposits without compromising the structural integrity of the radiator, pipes, or seals.
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9.6
Superb
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9.6
Superb
Wynn's

Wynn's Commercial Vehicle Cooling System Flush - Powerful Acid-Free Cleaning for Limescale, Corrosion & Sludge Removal - Safe for Cooling System Materials - Compatible with OAT Coolant - 1L

Why we love it
  • Removes stubborn cooling contaminants.
  • Restores system performance efficiently.
  • Safe for all system materials.
Main Highlights
  • ✅ DEEPLY CLEANS AND RESTORES COOLING SYSTEM PERFORMANCE: This concentrated cooling system flush is expertly formulated to thoroughly cleanse all types of commercial vehicle cooling systems by removing accumulated contaminants. Over time, limescale deposits, corrosion, sludge, and oil residues build up inside cooling circuits, reducing efficiency and causing overheating risks. This product penetrates deeply to dissolve and flush out these stubborn deposits, restoring the cooling system’s optimal functionality.
  • ✅ DUAL ACTION FORMULATION TARGETING LIMESCALE AND CORROSION: The solution features a dual-action formula that specifically targets the two primary causes of cooling system degradation. First, it effectively dissolves limescale deposits, which result from mineral buildup in the coolant over time. Second, it aggressively eliminates corrosion, sludge, and oil residues, which can accumulate from system wear and external contaminants. This combination ensures that both inorganic and organic contaminants are removed, leading to a cleaner system with restored coolant flow and heat exchange efficiency.
  • ✅ SAFE AND COMPATIBLE WITH ALL COOLING SYSTEM MATERIALS: The cooling system flush is specially formulated to be completely safe for all materials commonly found within vehicle cooling circuits. It does not contain aggressive acids, thus protecting rubber hoses, seals, and various metals such as aluminum, steel, and copper from corrosion or degradation during the cleaning process. This makes it suitable for use in any commercial vehicle cooling system regardless of the coolant type, including modern OAT (Organic Acid Technology) coolants.
  • ✅ HIGH PERFORMANCE IN ALL CLOSED-CIRCUIT COOLING SYSTEMS: Engineered for maximum effectiveness, this cooling system flush excels in all closed-circuit cooling systems used in commercial vehicles. These systems require specialized cleaning agents to penetrate complex channels and remove contaminants without compromising system components. The product’s concentrated nature enables it to deliver powerful cleaning action in a single treatment, restoring proper coolant circulation and heat dissipation.
  • ✅ ACID-FREE FORMULATION FOR PROTECTED AND EFFICIENT CLEANING: Unlike many other radiator cleaners that rely on strong acids, this cooling system flush employs an acid-free formula that balances effective cleaning power with system safety. The absence of acids reduces the risk of corrosion and damage to sensitive components, providing a gentler yet thorough cleanse. This ensures that internal surfaces are cleared of deposits without compromising the structural integrity of the radiator, pipes, or seals.
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3
Holts HAFR0006B Antifreeze Coolant for Car VW-Audi-Seat-Skoda G12, G12+, G12++, G13, G12 EVO 10-year 300k mile long life protection to -30°C, Pink, 5 Litre

Holts HAFR0006B Antifreeze Coolant for Car VW-Audi-Seat-Skoda G12, G12+, G12++, G13, G12 EVO 10-year 300k mile long life protection to -30°C, Pink, 5 Litre

Holts
Why we love it
  • Ready to use Formula.
  • High-level anti-corrosion protection provided.
  • Guaranteed protection for 300,000 miles.
Main Highlights
  • Ready to use Formula: Whether you are simply topping up or want to flush and fill the entire system, there is no need to dilute. Simply pour directly into the cooling system. To fill the entire cooling system, we recommend you flush the system before adding Holts Coolant
  • High-level anti-corrosion protection for petrol or diesel engines & Compatible with all Ethylene Glycol based coolants
  • We Specifically Recommend this product for the Following Applications: VAG G12, G12+, G12++, G13, G12evo, TL 774G, G48, But it may also be used in any Vehicle requiring an OAT (Organic Acid Technology) Coolant Antifreeze.
  • Holt’s technology provides unrivalled protection for up to 300,000 miles/480,000km or 10 years Guarantee when the Cooling system is flushed and filled
  • Holts: Driving Since 1919
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9.4
Superb
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9.4
Superb
Holts

Holts HAFR0006B Antifreeze Coolant for Car VW-Audi-Seat-Skoda G12, G12+, G12++, G13, G12 EVO 10-year 300k mile long life protection to -30°C, Pink, 5 Litre

Why we love it
  • Ready to use Formula.
  • High-level anti-corrosion protection provided.
  • Guaranteed protection for 300,000 miles.
Main Highlights
  • Ready to use Formula: Whether you are simply topping up or want to flush and fill the entire system, there is no need to dilute. Simply pour directly into the cooling system. To fill the entire cooling system, we recommend you flush the system before adding Holts Coolant
  • High-level anti-corrosion protection for petrol or diesel engines & Compatible with all Ethylene Glycol based coolants
  • We Specifically Recommend this product for the Following Applications: VAG G12, G12+, G12++, G13, G12evo, TL 774G, G48, But it may also be used in any Vehicle requiring an OAT (Organic Acid Technology) Coolant Antifreeze.
  • Holt’s technology provides unrivalled protection for up to 300,000 miles/480,000km or 10 years Guarantee when the Cooling system is flushed and filled
  • Holts: Driving Since 1919
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4
Engine Radiator Flush - Coolant System Cleaner, Automotive Rust Deposit Remover | for Treating Car Cooling, Anti-Scale
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Engine Radiator Flush - Coolant System Cleaner, Automotive Rust Deposit Remover | for Treating Car Cooling, Anti-Scale

Generic
Why we love it
  • Sturdy stainless steel construction.
  • Flexible 180-degree rotating connector.
  • Efficient cleaning in tight spaces.
Main Highlights
  • The cleaning rod with robust stainless steel and a leak-proof building is tailored for demanding use. It improves with fast connectors to deliver reliable features during any task
  • RELIABLE COMPATIBILITY With an adaptable 180 degree rotating connector avoids hose twisting and maintains consistent water flow and works seamlessly alongside most pressure washer systems
  • ADVANCED NOZZLE TECHNOLOGY The radiator rod with a 4 hole 25 fan nozzle boosts water pressure and provides an expansive spray pattern for thorough removal of embedded debris
  • Cooling System Optimization This tool is designed for the backflow coil waste, maintain cooling systems by clearing obstructions in radiator fins and restoring airflow to maintain engines best working conditions
  • Narrow space knowledge: achieve unmatched cleaning in tight spaces with the ultra-thin flat that provides most quick discs adequate and perfect access to eliminate difficult stains for conventional cleaning tools that are not reachable
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9.2
Superb
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9.2
Superb
Generic

Engine Radiator Flush - Coolant System Cleaner, Automotive Rust Deposit Remover | for Treating Car Cooling, Anti-Scale

Why we love it
  • Sturdy stainless steel construction.
  • Flexible 180-degree rotating connector.
  • Efficient cleaning in tight spaces.
Main Highlights
  • The cleaning rod with robust stainless steel and a leak-proof building is tailored for demanding use. It improves with fast connectors to deliver reliable features during any task
  • RELIABLE COMPATIBILITY With an adaptable 180 degree rotating connector avoids hose twisting and maintains consistent water flow and works seamlessly alongside most pressure washer systems
  • ADVANCED NOZZLE TECHNOLOGY The radiator rod with a 4 hole 25 fan nozzle boosts water pressure and provides an expansive spray pattern for thorough removal of embedded debris
  • Cooling System Optimization This tool is designed for the backflow coil waste, maintain cooling systems by clearing obstructions in radiator fins and restoring airflow to maintain engines best working conditions
  • Narrow space knowledge: achieve unmatched cleaning in tight spaces with the ultra-thin flat that provides most quick discs adequate and perfect access to eliminate difficult stains for conventional cleaning tools that are not reachable
Show More
5
PowerFlush Air Radiator Cleaner Tool – Coolant System Flush Gun with Quick Connect Nozzles – Heavy-Duty Automotive Flushing for Engine Cooling Systems
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PowerFlush Air Radiator Cleaner Tool – Coolant System Flush Gun with Quick Connect Nozzles – Heavy-Duty Automotive Flushing for Engine Cooling Systems

Generic
Why we love it
  • Efficient cooling system cleaning.
  • Air-powered flush action benefits.
  • Universal fit for all vehicles.
Main Highlights
  • ✅ Efficient Cooling System Cleaning – Effectively removes rust, scale, and debris from radiators, heater cores, and coolant passages for better engine performance.
  • 🔧 Air-Powered Flush Action – Uses compressed air with water for a powerful, thorough flush—no harsh chemicals needed.
  • 🌐 Universal Fit with Multi Nozzles – Comes with multiple nozzle sizes to fit most automotive coolant systems, including cars, trucks, and SUVs.
  • 🛠️ Durable & Corrosion-Resistant Build – Constructed from high-quality materials for long-lasting use in workshop or garage settings.
  • 🚗 Ideal for Professional or DIY Use – Simple to connect and operate, making it suitable for both automotive technicians and home mechanics.
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9.1
Superb
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9.1
Superb
Generic

PowerFlush Air Radiator Cleaner Tool – Coolant System Flush Gun with Quick Connect Nozzles – Heavy-Duty Automotive Flushing for Engine Cooling Systems

Why we love it
  • Efficient cooling system cleaning.
  • Air-powered flush action benefits.
  • Universal fit for all vehicles.
Main Highlights
  • ✅ Efficient Cooling System Cleaning – Effectively removes rust, scale, and debris from radiators, heater cores, and coolant passages for better engine performance.
  • 🔧 Air-Powered Flush Action – Uses compressed air with water for a powerful, thorough flush—no harsh chemicals needed.
  • 🌐 Universal Fit with Multi Nozzles – Comes with multiple nozzle sizes to fit most automotive coolant systems, including cars, trucks, and SUVs.
  • 🛠️ Durable & Corrosion-Resistant Build – Constructed from high-quality materials for long-lasting use in workshop or garage settings.
  • 🚗 Ideal for Professional or DIY Use – Simple to connect and operate, making it suitable for both automotive technicians and home mechanics.
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6
Prestone Coolant Flush, Engine Coolant Flush For Car To Prevent Problems & Maximise Performance, Car Coolant Flush With Advanced Cleaner To Dissolve Corrosion & Scale, Safe For All Engines, 1 Litre
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Prestone Coolant Flush, Engine Coolant Flush For Car To Prevent Problems & Maximise Performance, Car Coolant Flush With Advanced Cleaner To Dissolve Corrosion & Scale, Safe For All Engines, 1 Litre

Prestone
Why we love it
  • High performance coolant flush.
  • Advanced cleaner included.
  • Universal coolant compatibility.
Main Highlights
  • HIGH PERFORMANCE COOLANT FLUSH: Prestone Engine Coolant Flush is a simple solution that can be used at home to get rid of deposits and build up in the cooling system, helping to prevent problems and extend the life of your engine.
  • CONTAINS ADVANCED CLEANER: Our car Coolant Flush has been developed by the experts at Prestone to keep your engine at peak performance. It contains an advanced cleaner that eliminates scale, corrosion, silicate deposits and oil & fuel contamination. Perfect for cleaning up after a blown head gasket, or to restore cabin heat in vehicles that use Silicate based Antifreeze like VW G12++ and G13 Coolant
  • UNIVERSAL ENGINE COOLANT: This Cooling System Flush is safe for all engines and all cooling system components including: All antifreeze and car coolant fluid, as well as all engine metals, gaskets, plastics and hoses.
  • 10 YEAR PROTECTION: Enjoy an industry-leading 10 year guarantee with our Coolant Flush. Flush and refill with Prestone Antifreeze Coolant for a longer engine life. This 1 Litre bottle is enough to flush the whole system with just one application.
  • OVER 90 YEARS OF EXCELLENCE: At Prestone, we have spent nearly a century offering solutions to your car troubles to make your life stress free. If you want the perfect solution to protect your vehicle and maximise performance, we have what you need.
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9.1
Superb
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9.1
Superb
Prestone

Prestone Coolant Flush, Engine Coolant Flush For Car To Prevent Problems & Maximise Performance, Car Coolant Flush With Advanced Cleaner To Dissolve Corrosion & Scale, Safe For All Engines, 1 Litre

Why we love it
  • High performance coolant flush.
  • Advanced cleaner included.
  • Universal coolant compatibility.
Main Highlights
  • HIGH PERFORMANCE COOLANT FLUSH: Prestone Engine Coolant Flush is a simple solution that can be used at home to get rid of deposits and build up in the cooling system, helping to prevent problems and extend the life of your engine.
  • CONTAINS ADVANCED CLEANER: Our car Coolant Flush has been developed by the experts at Prestone to keep your engine at peak performance. It contains an advanced cleaner that eliminates scale, corrosion, silicate deposits and oil & fuel contamination. Perfect for cleaning up after a blown head gasket, or to restore cabin heat in vehicles that use Silicate based Antifreeze like VW G12++ and G13 Coolant
  • UNIVERSAL ENGINE COOLANT: This Cooling System Flush is safe for all engines and all cooling system components including: All antifreeze and car coolant fluid, as well as all engine metals, gaskets, plastics and hoses.
  • 10 YEAR PROTECTION: Enjoy an industry-leading 10 year guarantee with our Coolant Flush. Flush and refill with Prestone Antifreeze Coolant for a longer engine life. This 1 Litre bottle is enough to flush the whole system with just one application.
  • OVER 90 YEARS OF EXCELLENCE: At Prestone, we have spent nearly a century offering solutions to your car troubles to make your life stress free. If you want the perfect solution to protect your vehicle and maximise performance, we have what you need.
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7
PRESTONE PAFR0038B Coolant Antifreeze for All Vehicles 10-year 300,000 miles Corrosion Protection, Ready to Use, 4 Litre

PRESTONE PAFR0038B Coolant Antifreeze for All Vehicles 10-year 300,000 miles Corrosion Protection, Ready to Use, 4 Litre

Prestone
Why we love it
  • World's No.1 Branded Coolant Antifreeze.
  • Compatible with all models.
  • Guarantees 300,000-mile Corrosion protection.
Main Highlights
  • Prestone is The World’s No.1 Branded Coolant Antifreeze & Global leaders in innovative Coolant Technologies
  • Compatibility Guaranteed for All Makes and Models
  • Prestone extended life antifreeze coolant is compatible with any antifreeze coolant regardless of color for use in all makes and models of cars and light duty trucks, petrol or diesel on the road today. Prevents freeze ups down to -37°C, overheating and boiling-over up to +129°c.
  • Trusted and used as Factory Fill by Vehicle Manufacturers
  • 11 Year, 300,000-mile Corrosion protection guarantee when cooling system is flushed and filled with Prestone
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9.0
Superb
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9.0
Superb
Prestone

PRESTONE PAFR0038B Coolant Antifreeze for All Vehicles 10-year 300,000 miles Corrosion Protection, Ready to Use, 4 Litre

Why we love it
  • World's No.1 Branded Coolant Antifreeze.
  • Compatible with all models.
  • Guarantees 300,000-mile Corrosion protection.
Main Highlights
  • Prestone is The World’s No.1 Branded Coolant Antifreeze & Global leaders in innovative Coolant Technologies
  • Compatibility Guaranteed for All Makes and Models
  • Prestone extended life antifreeze coolant is compatible with any antifreeze coolant regardless of color for use in all makes and models of cars and light duty trucks, petrol or diesel on the road today. Prevents freeze ups down to -37°C, overheating and boiling-over up to +129°c.
  • Trusted and used as Factory Fill by Vehicle Manufacturers
  • 11 Year, 300,000-mile Corrosion protection guarantee when cooling system is flushed and filled with Prestone
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8
LIQUI MOLY 5189 Pro-Line Radiator Cleaner 1 Litre - Black
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LIQUI MOLY 5189 Pro-Line Radiator Cleaner 1 Litre - Black

Liqui Moly
Why we love it
  • Universal compatibility for cooling systems.
  • Saves coolant – highly concentrated.
  • Efficiently eliminates system blockages.
Main Highlights
  • Suitable for all cooling and heating systems.
  • Compatible with all standard cooling stabilisers and anti-freeze.
  • 1 litre is enough for up to 50 litres of coolant.
  • For professionals only!
  • Deposits in the cooling/heating system form barriers against heat exchange, blocking the thermostat and regulating mechanisms.
  • Suitable for all cooling water systems in motor vehicles, buses and commercial vehicles.
  • Add contents to the cooling water. Run the heating system. Depending on the degree of contamination let the engine run approximately 10 to 30 minutes. Drain the cleaner and flush out the cooling system with water.
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9.0
Superb
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9.0
Superb
Liqui Moly

LIQUI MOLY 5189 Pro-Line Radiator Cleaner 1 Litre - Black

Why we love it
  • Universal compatibility for cooling systems.
  • Saves coolant – highly concentrated.
  • Efficiently eliminates system blockages.
Main Highlights
  • Suitable for all cooling and heating systems.
  • Compatible with all standard cooling stabilisers and anti-freeze.
  • 1 litre is enough for up to 50 litres of coolant.
  • For professionals only!
  • Deposits in the cooling/heating system form barriers against heat exchange, blocking the thermostat and regulating mechanisms.
  • Suitable for all cooling water systems in motor vehicles, buses and commercial vehicles.
  • Add contents to the cooling water. Run the heating system. Depending on the degree of contamination let the engine run approximately 10 to 30 minutes. Drain the cleaner and flush out the cooling system with water.
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9
Liqui Moly 2425 Pro-Line Engine Flush, k.A.
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Liqui Moly 2425 Pro-Line Engine Flush, k.A.

Liqui Moly
5% Off
Why we love it
  • Improves engine efficiency.
  • Reduces noise.
  • Increases vehicle reliability.
Main Highlights
  • Cleans the engine from the inside. Removes deposits from lubrication holes, oil screens, piston ring zone, etc. Reduces engine noise and oil consumption. Improves compression. Increases vehicle's reliability.
  • Cleaning and flushing out the oil systems of petrol and diesel engines.
  • One 500 ml can is sufficient for up to 5 litres of oil. Add Pro-Line Engine Flush to the engine oil at running temperature before changing the oil. After adding the product, allow the engine to idle for approx.
  • 10 to 15 minutes depending on the degree of contamination. Then change the oil and the filter. Pro-Line Engine Flush is compatible with all commercially available engine oils Note: Not suitable for use on motorbikes with wet clutches.
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8.9
Excellent
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8.9
Excellent
Liqui Moly

Liqui Moly 2425 Pro-Line Engine Flush, k.A.

5% Off
Why we love it
  • Improves engine efficiency.
  • Reduces noise.
  • Increases vehicle reliability.
Main Highlights
  • Cleans the engine from the inside. Removes deposits from lubrication holes, oil screens, piston ring zone, etc. Reduces engine noise and oil consumption. Improves compression. Increases vehicle's reliability.
  • Cleaning and flushing out the oil systems of petrol and diesel engines.
  • One 500 ml can is sufficient for up to 5 litres of oil. Add Pro-Line Engine Flush to the engine oil at running temperature before changing the oil. After adding the product, allow the engine to idle for approx.
  • 10 to 15 minutes depending on the degree of contamination. Then change the oil and the filter. Pro-Line Engine Flush is compatible with all commercially available engine oils Note: Not suitable for use on motorbikes with wet clutches.
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10
Radiator Cleaner Coolant System Flush 1L - Radiator & Cooling System Cleaner and Flush Treatment
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Radiator Cleaner Coolant System Flush 1L - Radiator & Cooling System Cleaner and Flush Treatment

Generic
Why we love it
  • Removes harmful contaminants effectively.
  • Prevents costly blockages easily.
  • Safe for all engine materials.
Main Highlights
  • Removes Contaminants – Effectively clears oil, grease, and lime deposits in cooling and heating systems.
  • Prevents Blockages – Eliminates potential blockages in thermostat valves and control mechanisms, ensuring optimal engine temperature.
  • Safe for Materials – No aggressive acids or alkalis, compatible with antifreeze, and neutral on rubber and plastics.
  • Improves Engine Performance – Reduces excessive engine wear caused by overheating, ensuring reliable operation.
  • Simple to Use – 1 liter treats up to 50 liters of coolant; easy application with straightforward flushing instructions.
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8.8
Excellent
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8.8
Excellent
Generic

Radiator Cleaner Coolant System Flush 1L - Radiator & Cooling System Cleaner and Flush Treatment

Why we love it
  • Removes harmful contaminants effectively.
  • Prevents costly blockages easily.
  • Safe for all engine materials.
Main Highlights
  • Removes Contaminants – Effectively clears oil, grease, and lime deposits in cooling and heating systems.
  • Prevents Blockages – Eliminates potential blockages in thermostat valves and control mechanisms, ensuring optimal engine temperature.
  • Safe for Materials – No aggressive acids or alkalis, compatible with antifreeze, and neutral on rubber and plastics.
  • Improves Engine Performance – Reduces excessive engine wear caused by overheating, ensuring reliable operation.
  • Simple to Use – 1 liter treats up to 50 liters of coolant; easy application with straightforward flushing instructions.
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We scanned 753 products

We reviewed these offers relevant to the Engine Coolant Flush Cleaner within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like IRONTITE, Wynn's, Holts, Generic, Prestone, Liqui Moly, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.
For the best Engine Coolant Flush Cleaner in the market, we considered we took a deep dive into 3766 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that: