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The Best Radiator Flushes

Looking for the best Radiator Flushes?

Discover now our comparison of the best Radiator Flushes. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Radiator Flushes are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Radiator Flushes in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.

No. 1
BlueDevil Products 00203 Radiator Flush & Oil Degreaser - 1 Quart
  • High Performance, Deep Cleaning Power
  • Oil Degreaser & Rust Remover
  • Restores vehicle efficiency
  • Made in the USA
  • Detailed instructions for use included on the package
SaleNo. 2
Prestone AS105 Total Cooling Syststem Cleaner for Radiator, Heater Core, and Hoses, 22 oz., 1 pack , (Packaging May vary)
  • 2-in-1 formula designed for light flushing and heavy-duty cleaning
  • Cleans cooling systems to help prevent overheating
  • Non-toxic, non-acidic formula is easy-to-use and safe for all cooling system metals
  • Effectively removes heavy deposits by drawing metal oxides into the solution
  • Strong enough to help restore maximum cooling system efficiency
No. 3
Liqui Moly Radiator Cleaner | 300 ml | Cooler additive | SKU: 2051
  • Single Quantity
  • No Core Charge Req.
  • Weight: 0.8lbs
SaleNo. 4
CRC Thermocure Coolant System Rust Remover, 32 Oz, Rust Remover for Vehicle Cooling Systems, Removes Rust Scale and Deposits
  • EVAPO-RUST RUST REMOVER: Evapo-Rust effortlessly removes rust from automotive parts, hardware, tools, cookware, and antiques without any scrubbing or sanding.
  • THERMOCURE FORMULA: Thermocure is made of a non-toxic and water-based solution that is easy-to-use on automotive cooling systems. It is non-corrosive and non-flammable.
  • EASY APPLICATION: This non-toxic, non-flammable solution removes rust that causes overheating in three easy steps. Treats cooling systems up to 3 gallons.
  • USE: The cooling system cleaner removes rust from the cooling system in three easy steps that include draining the coolant, adding the solution and topping off with water, let the solution stay in the car for 3-4 hours up to several days. Drain the cooling system and flush 3-4 times with water. Refill with manufacturer's recommended coolant.
  • SPECIFICATIONS: Our Thermocure cleaner is available in a 32 oz bottle.
SaleNo. 5
BlueDevil Products 00204 Radiator Flush - 1 Quart
  • Extends Vehicle Life
  • Advanced Cleaning Power
  • Concentrated Formula
  • Improve performance
No. 6
Genuine Ford Fluid VC-1 Premium Cooling System Flush - 22 oz.
  • Fast flush formulation
  • Compatible with all coolant types
  • Contains no petroleum distillates
  • Use to flush engine cooling system whenever coolant is changed or repairs are required
  • Does not require the use of a neutralizer
No. 7
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
  • 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.
No. 8
Gunk Motor Medic C1412 10-Minute Radiator Flush - 11 oz.
  • MOTOR MEDIC is a local family owned company based out of Charlotte, NC. For more than 75 years, LIQUID WRENCH products, developed by the people who use them, has earned the trust of hard-working tradesment and the active DIYer through consistent, superior performance and a commitment to innovation.MOTOR MEDIC
No. 9
Dorman 47016 Coolant Service Kit Universal Fit
  • Include two clamps, multiple tees, a garden hose adapter, an elbow and a cap
  • Easy to use
  • Fresh coolant helps prevent freezing, overheating, and possible extensive damage to the car's cooling system
  • Universal fit for a wide range of applications
  • Support available - every Dorman part is backed by Dorman's ASE Blue Seal Certified technical support team
No. 10
Prestone Flush 'N Fill Radiator Cleaner Kit, Pack of 6
  • Professionally backflushes cooling systems of most cars and light trucks on the road today
  • Includes flush & fill tee, back flow preventer, hose clamps & splash deflector tube. One kit fits any light truck or car
  • Easily installs antifreeze/coolant in minutes
  • Rust and dirty coolant that circulates in your car’s cooling system can lead to a clogged radiator, resulting in overheating and engine damage
  • Draining the radiator alone does not sufficiently remove old coolant, as the radiator may contain 40% or less of the coolant

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Last update on 2025-07-03 / Affiliate links / Images from Amazon Product Advertising API