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10 bestCar Radiator Flushof August 2025

112M consumers helped this year.

1

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 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

Holts

9.9

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2

Holts HAFR0006B Antifreeze Coolant for Car VW-Audi-Seat-Skoda G12, G12+, G12++ & Speedflush Coolant Flush, Universal Car Radiator Flush, High Performance Coolant Flush For Radiators & Cooling
Holts HAFR0006B Antifreeze Coolant for Car VW-Audi-Seat-Skoda G12, G12+, G12++ & Speedflush Coolant Flush, Universal Car Radiator Flush, High Performance Coolant Flush For Radiators & Cooling

Holts

9.8

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3

Prestone PREP0002A Cooling System Flush and Degreaser 1 Litre & Prestone LOYAF2100LGBA Coolant/Antifreeze - Ready to Use 1lt
Prestone PREP0002A Cooling System Flush and Degreaser 1 Litre & Prestone LOYAF2100LGBA Coolant/Antifreeze - Ready to Use 1lt

Prestone

9.7

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4

Wynn's Radiator Flush Cleaner For All Car Antifreeze & Coolant Systems 325ml
Wynn's Radiator Flush Cleaner For All Car Antifreeze & Coolant Systems 325ml

Wynn's

9.5

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27% off

5

LIQUI MOLY Radiator Cleaner | 300 ml | Cooler additive | SKU: 1804
LIQUI MOLY Radiator Cleaner | 300 ml | Cooler additive | SKU: 1804

Liqui Moly

9.2

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STP Radiator Flush 300 ml, Quickly Cleans All Radiator Cleaning Systems, Prevents Overheating, Rust and Corrosion, Mechanical Car Cleaning Products, Made in the UK

STP Radiator Flush 300 ml, Quickly Cleans All Radiator Cleaning Systems, Prevents Overheating, Rust and Corrosion, Mechanical Car Cleaning Products, Made in the UK

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Power Maxed Concentrated Radiator Flush - PMRADF - 375ml

Power Maxed Concentrated Radiator Flush - PMRADF - 375ml

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Prestone Flush 'N Fill Radiator Cleaner Kit, Pack of 6

Prestone Flush 'N Fill Radiator Cleaner Kit, Pack of 6

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6

KS Tools 515.1216 Cooling System Flush Gun
KS Tools 515.1216 Cooling System Flush Gun

KS TOOLS

8.9

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7

Wynn's 1831083 25541 Extreme Cooling System Degreaser, 325 ml
Wynn's 1831083 25541 Extreme Cooling System Degreaser, 325 ml

Wynn's

8.6

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8

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

Liqui Moly

8.4

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9

Lisle 60900 Heater Core Backflush Tool
Lisle 60900 Heater Core Backflush Tool

Lisle

8.1

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5% off

10

WOL Radiator Cleaner Cooling System Rust Remover – Liqui Moly Radiator Flush 1804 – Best Radiator Flush Chemical– Radiator Flush Solution Cooling Systems - 300ml (1 UNIT)
WOL Radiator Cleaner Cooling System Rust Remover – Liqui Moly Radiator Flush 1804 – Best Radiator Flush Chemical– Radiator Flush Solution Cooling Systems - 300ml (1 UNIT)

WOL

7.8

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