10 Best 420cf radiator flush Reviews and Guide 2020

Looking for best 420cf radiator flush? For this post, I have put together a collection of the best 420cf radiator flush which are currently available.

420cf radiator flush

Are you still confused for how to select top 420cf radiator flush? Then don’t buy before you read this review and guide. Compare and choose the best from our selection.

Take your time in reading through this 420cf radiator flush review and trust that you would find the best that you would need.

At A Glance: Best 420cf radiator flush for You

If you’re in a hurry, then here’s the list of the best 420cf radiator flush:

    1. Best Rated: WIX Filters – 24058 Heavy Duty …
    2. Top Pick: Prestone AS110 Radiator Flush and Degreaser, …
    3. Overall Best: OEM TOOLS 24506 Cooling System Back …
    4. For The Money: BlueDevil Radiator Flush …
    5. Best Budget: Permatex 80030 Heavy Duty Radiator Cleaner, …
    6. Goog Reviews: Gunk Motor Medic C1412 10-Minute Radiator …
    7. Overall Good: Irontite ThoroFlush (468-9110-16) …
    8. Great Performance: Continental 65099 5/16″ ID Windshield Wiper …
    9. Cheap Price: Hy-Per Lube HFL400 Hy-per Cool Radiator …
    10. Cheap One: WIX Filters – 24058 Heavy Duty …0

First, let’s take a look at the top-rated 420cf radiator flush, then we’ll read our full research review below to select the best product.

Image Product Name Rating Price
USER FRIENDLY

WIX Filters - 24058 Heavy Duty Radiator Liquid Cooling T, Pack

WIX Filters – 24058 Heavy Duty Radiator Liquid Cooling T, Pack

Features: Capacity(grams) (g) : 0.00 , Class : HB , Duty Type : HD

5.0
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EDITOR’S CHOICE

Prestone AS110 Radiator Flush and Degreaser, 32 oz

Prestone AS110 Radiator Flush and Degreaser, 32 oz

Features: 2-in-1 cooling system cleaner dissolves corrosion and , Eliminates oil and fuel contamination and restores , Strips away corrosion by-product from metal surfaces

4.9
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BUDGET PICK

OEM TOOLS 24506 Cooling System Back Flush Tool

OEM TOOLS 24506 Cooling System Back Flush Tool

Features: 1/2″, 5/8″ and 3/4″ Size Hose Fittings , Connects By Using a Normal Garden Hose , Easy to Use

4.7
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MY CHOICE

BlueDevil Radiator Flush

BlueDevil Radiator Flush

Features: Specially formulated coolant flush works well in , Improve performance , Extends Vehicle Life

4.5
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TOP PICK

Permatex 80030 Heavy Duty Radiator Cleaner, 1 quart

Permatex 80030 Heavy Duty Radiator Cleaner, 1 quart

Features: Removes rust and scale from automotive engines, , Cleans and unclogs stream cleaner coils and , Not for use in aluminum radiators

4.5
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HONEST PRODUCT

Gunk Motor Medic C1412 10-Minute Radiator Flush - 11 oz.

Gunk Motor Medic C1412 10-Minute Radiator Flush – 11 oz.

Features: MOTOR MEDIC is a local family owned , › See more product details ,

4.4
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No #1 PRODUCT

Irontite ThoroFlush (468-9110-16)

Irontite ThoroFlush (468-9110-16)

Features: Industrial Strength concentrated radiator, engine coolant system , Loosens and removes rust, scale, grease, oil , Cleans Auto, HD Truck and Equipment Cooling

4.3
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FOR THE MONEY

Continental 65099 5/16

Continental 65099 5/16″ ID Windshield Wiper / Radiator Overflow Tubing –

Features: Goodyear Engineered Products are now branded Continental , EPDM tubing for use on windshield wiper , Inner Diameter (ID): 5/16″ (7.9mm) | Outer

4.3
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FOR YOU

Hy-Per Lube HFL400 Hy-per Cool Radiator Cleaner & Super Flush -

Hy-Per Lube HFL400 Hy-per Cool Radiator Cleaner & Super Flush –

Features: Eliminates Damaging Coolant Gels , Reduces Operating Temperatures , Neutralizes Acids That Cause Corrosion

4.3
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Cheap Product

CLR PRO Automotive Regular Maintenance Radiator Flush and Cleaner, 24 Ounces

CLR PRO Automotive Regular Maintenance Radiator Flush and Cleaner, 24 Ounces

Features: Radiator Flush and Cleaner: Regular Maintenance Radiator , Radiator Car Cleaner: Regular Maintenance Radiator Flush , Quick Scale and Corrosion Removal: With an

0
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Best 420cf radiator flush – Buying Guide And Recommendation

This top 10 best 420cf radiator flush review starts by looking at the different technologies and then after lists the best products.

1. WIX Filters – 24058 Heavy Duty Radiator Liquid Cooling T, Pack

ANTI-FREEZE

WIX Filters – 24058 Heavy Duty Radiator Liquid Cooling T, Pack of 1

  • Capacity(grams) (g) : 0.00
  • Class : HB
  • Duty Type : HD
  • Inner Diameter Top : Closed
  • Micron (Micro) : 0.00
What Real Customers Say About This Product?

James Gale says: “I run several trucks…. and the coolant will loose some if its properties over time…. this additive restores those properties, to lube the water pump and balance the PH…. this is a great value.. as its a fraction of the price of an 8 oz bottle in the auto parts store…
I run several trucks…. and the coolant will loose some if its properties over time…. this additive restores those properties, to lube the water pump and balance the PH…. this is a great value.. as its a fraction of the price of an 8 oz bottle in the auto parts store….

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2. Prestone AS110 Radiator Flush and Degreaser, 32 oz

Style:Radiator Flush and Degreaser, 32 oz. Prestone Radiator 2-in-1 Flush & Oil Degreaser is an innovative and easy-to-use cooling system cleaner for the most contaminated systems. Just one use helps prevent overheating, a major cause of engine failure. Perfect for blown head gaskets. Part 1 is an acid cleaner that dissolves corrosion and scale without damaging metals. Part 2 is an oil encapsulation system that strips grease and oil from all surfaces and flushes it away.

This 2-in-1 system is fast and easy to use, and removes aluminum corrosion, silicate gel, and rust. Safe for all antifreeze/coolants, metals, gaskets, hoses, and plastics.

Prestone AS110 Radiator Flush and Degreaser, 32 oz

  • 2-in-1 cooling system cleaner dissolves corrosion and removes grease
  • Eliminates oil and fuel contamination and restores cabin heat
  • Strips away corrosion by-product from metal surfaces without causing damage
  • Helps prevent overheating, a major cause of engine failure
  • Safe for all antifreeze/coolants, metals, gaskets, hoses, and plastics
What Real Customers Say About This Product?

HonestOpin says: “Used for heavily gunked-up system on 2013 Chevy Sonic with failed oil cooler. Replaced oil cooler then added Prestone Degreaser and topped off system with distilled water. Ran engine for about 30-45 minutes. Allowed system to cool just enough to avoid getting burned, then disconnected main hoses to drain. After draining, all peanut butter-like sludge appears to be gone. Performing second flush for confidence.
Used for heavily gunked-up system on 2013 Chevy Sonic with failed oil cooler. Replaced oil cooler then added Prestone Degreaser and topped off system with distilled water. Ran engine for about 30-45 minutes. Allowed system to cool just enough to avoid getting burned, then disconnected main hoses to drain. After draining, all peanut butter-like sludge appears to be gone. Performing second flush for confidence..

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3. OEM TOOLS 24506 Cooling System Back Flush Tool

Provides the technician with an easy way to flush the heater core. Simply remove radiator cap and drain the coolant. Remove heater hoses from the engine, placed the stepped adapter end of the THX356 Back Flush tool into the hose opposite of the one connected to the water pump. Connect the adapter to the shop water supply. Turn water supply on and open the valve to allow water to flow through the heater core.

Once you see clear, clean water, you heater core is clean.

OEM TOOLS 24506 Cooling System Back Flush Tool

  • 1/2″, 5/8″ and 3/4″ Size Hose Fittings
  • Connects By Using a Normal Garden Hose
  • Easy to Use
Most Frequently Asked Question:

1. Hi! Does it shoot a jet stream of water (to help flush), or does the water come out at about the same speed as it does from an open garden hose?

Like any piping orifice that is “piped down”, the outlet is always at a higher pressure than the input.So, yes, it shoots out faster than a regular garden hose – but I would not call it a jet.The benefit here is two-fold.One is the valve so you can turn the water on and off at the end of the hose.Two is that it allows you to fit it into tubing.I used to flush the heater core on my VW diesel.Hope that helps!

What Real Customers Say About This Product?

art g says: “What a great tool… and at a great price. Very versatile. This was cheaper to purchase than for my son to make on his CNC machines! Totally worked great on unclogging the heater core in my friend’s truck. (that would have been an $800 nightmare!) Many other uses. You can really control the volume significantly with it valve. Brass and aluminum… you’ll have it forever! (unless it grows legs and take a walk!)
What a great tool… and at a great price. Very versatile. This was cheaper to purchase than for my son to make on his CNC machines! Totally worked great on unclogging the heater core in my friend’s truck. (that would have been an $800 nightmare!) Many other uses. You can really control the volume significantly with it valve. Brass and aluminum… you’ll have it forever! (unless it grows legs and take a walk!).

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5. BlueDevil Radiator Flush

BlueDevil Radiator Flush restores efficiency to vehicles by helping remove grease, rust, grime or any other build up that occurs during normal vehicle use.

BlueDevil Radiator Flush

  • Specially formulated coolant flush works well in all vehicles
  • Improve performance
  • Extends Vehicle Life
  • Advanced Cleaning Power
  • Concentrated Formula
Most Frequently Asked Question:

1. How many bottles does it take to flush a four cylinder system?

Based upon my experience, ONE bottle is more than enough.

2. Is it safe for aluminum radiators? Their website doesn’t say.

I have used it in aluminum radiators a lot
If the radiator is in bad shape it might leak
This is a great product here

3. Can you use this for boats?

It is designed for a closed loop coolant system, as in it would continue to circulate through cooling system. Typical boats use lake water and dump right back out. So it would depend on the type of cooling system on the boat

4. Will it work without damaging a brass radiator on a 1915 Ford model T?

Not sure
I would use dishwasher detergent powder
What Real Customers Say About This Product?

Andrew Armitage says: “Wow! This stuff works much better than I expected! I just purchased an ’85 Cadillac Seville as a restoration project. I decided to flush out the radiator after I drained the system in order to replace all the radiator hoses, heater hose, thermostat, etc… I figured that it couldn’t hurt even though the antifreeze that I drained looked bright green and clean. I filled the system with the bottle of Blue Devil and water from the garden hose. I left it in the system for about a week and drove the car about 150 miles (in the summer with no chance
of temps dropping anywhere near freezing). I drained the radiator and was shocked that the water that came out was dark brown and there was brown sludge in the overflow tank! I also ran the heater on high during that week to make sure the coolant was flowing through the heater core. At first, I couldn’t even tell if the heater worked. By the end of the week, it was blowing fire! I drained and refilled with straight 100% water 3 more times and each time, the water drained was dirty until the 4th time when the overflow tank didn’t have a layer of brown sludge on the bottom and the radiator drained out clear water again. I then refilled with Prestone antifreeze 50/50 mix and the GM tablets they recommend. I have much better piece of mind knowing that all that corrosion and sludge was cleaned out of the cooling system, probably saving me from overheating and costly repairs down the road! Blue Devil really cleaned out and opened up coolant passages in my motor! I’ll be using it on all my cars now!.

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7. Permatex 80030 Heavy Duty Radiator Cleaner, 1 quart

Size:1 Quart (32 Ounces) Permatex Heavy Duty Radiator Cleaner removes rust and scale from automotive engines, radiators and water jackets. It also cleans and unclogs steam cleaner coils and boiler tubes. Not for use in aluminum radiators. Permatex does the job when it comes to specialty cleaners to dissolve rust, clean plastic or remove gum and deposits from parts. Permatex offers a complete line of professional strength cleaners and degreasers, each formulated to the highest standards and quality.

Permatex 80030 Heavy Duty Radiator Cleaner, 1 quart

  • Removes rust and scale from automotive engines, radiators and water jackets
  • Cleans and unclogs stream cleaner coils and broiler tubes
  • Not for use in aluminum radiators
  • Suggested Applications: Engines, radiators, water jackets, industrial maintenance applications
Most Frequently Asked Question:

1. Does a 2002 Ford F-350 with a 7.3 liter Powerstroke have an aluminum radiator? Is this safe to use in a diesel system?

Most radiators today are made of aluminum and plastic. Permatex 80030 is a strong acid cleaner. Suggest you not use it in a aluminum radiator.

2. Is it okay to use on a 1966 Chevy Caprice radiator original

Yes. All radiators made during the 60’s and into the 70’s were made out of brass and copper. I have used Permatex 80030 in my all original 1970 Chevelle.

3. Safe for older cars having a brass radiator & iron block and heads, but aluminum intake manifold with water passages and aluminum thermostat housings?

It’s a real good cleaner if you ever used stop leak it will remove it to find the hole

4. does this product remove scale on top of tubes

What’s Up John C!My appologies, but unfortunately, I never got a chance to use the product because it was rated to be unsafe to use on aluminum radiators and motorswith that said, I imagine it should be able to remove scale on the top of tubes(especially since, the acidity is capable of wearing away aluminum). I know this doesn’t ‘quite’ answer your question, but that’s my take. Again, I Appologize for not being more useful. Good Luck! 😉

What Real Customers Say About This Product?

Frank the mailman. says: “Tractor radiator.
Tractor radiator..

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9. Gunk Motor Medic C1412 10-Minute Radiator Flush – 11 oz.

Size:One Each, 11 oz. Gunk 10 Minute Radiator Flush quickly removes grease, scum, rust and scale. It is a fast, one step product that requires no neutralizer and contains no acids. This radiator flush is compatible with all cooling systems.

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
Most Frequently Asked Question:

1. Do you have do a flush or is this something you just pour and go? Thanks

No first drain existing coolent from radiator!! Second add watter nd bottle , 3rd, drain watter nd bottle from rad, 4th flush w watter remaining in rad , 5th add ur new coolent to rad

2. what are the ingredients in blue devil flush?

Water (7732-18-5), 2-butoxy Ethanol (111-76-2) and Tetra Potassium Poly Phosphate (7320-34-5)

3. What is the recommended disposal? I do not see the instructions on the bottle

You should take the fluid to autozone or a local garage that can dispose of the fluids

4. how many do you get for 9.25? This is not 9.25 for 1 bottle?

This listing appears to be for one bottle.
What Real Customers Say About This Product?

William says: “When the odometer on my 2003 Mustang rolled over 200,000 miles I decided to perform a minor tune-up which included flushing the cooling system and replacing the coolant. I was shocked at the rusty colored debris that the Gunk Motor Medic cleaned out of the block and radiator. It’s been over a year now and the radiator tank remains the color as the anti-freeze.
When the odometer on my 2003 Mustang rolled over 200,000 miles I decided to perform a minor tune-up which included flushing the cooling system and replacing the coolant. I was shocked at the rusty colored debris that the Gunk Motor Medic cleaned out of the block and radiator. It’s been over a year now and the radiator tank remains the color as the anti-freeze..

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11. Irontite ThoroFlush (468-9110-16)

Irontite ThoroFlush (468-9110-16)

  • Industrial Strength concentrated radiator, engine coolant system and fuel tank cleaner
  • Loosens and removes rust, scale, grease, oil and sludge
  • Cleans Auto, HD Truck and Equipment Cooling Systems
  • Safe for use on Cast Iron, Aluminum or Plastic
Most Frequently Asked Question:

1. do you have to flush out or can you leave in?

It’s a flush, so you must flush it out with water. If left in too long it will degrade non-metal components like hoses, and gaskets, so it is important to NOT leave it in.

2. Will this remove stop leak and safe for the heater core and transmission coolers? i have a bmw x3

Regarding if it will remove “stop leak”; that is a big “maybe” because it depends on many things.It is “safe” for the heater core and transmission coolers as long as you follow the directions on the bottle.It is a very powerful cleaner so you do not want to overexpose any soft materials like hoses and gaskets. Especially if they are older hoses and gaskets. It does clean cooling systems and fuel systems “dishwasher clean” as a friend of mine likes to say.Rinse well after using.heat and pressure make it work even better, so leave the thermostat in. And start the clock after the car gets to operating temp.Then wait for the car to cool enough to safely remove the product and then rinse with water repeatedly until it comes out clean.

3. will this help with cleaning the oil cooler on a 2005 ford power stroke coolant side is plugged

I used it to clean the radiator in my car that I had used stop leak and it did absolutely nothing! I left it in15 minutes instead of 10 and it drained clear. (red) I don’t recommend it nor will I ever buy it again.

4. Do I need to use a whole gallon to flush out heater core

One bottle of Thoro-Flush treats “UP TO” a 6-gallon capacity system. So, if you have a cooling system that your owners’ manuals states is a 3-gallon capacity cooling system you only need to use half the bottle of Thoro-Flush to have the proper mixture to flush your system.If you are cleaning a heater core that is not connected to your cooling system then you would mix 1/6 of the Thoro-Flush powder with one gallon of water to use to flush that single part.If you want to make less of a solution then split it further.1/12 bottle in half a gallon of watter, etc.

What Real Customers Say About This Product?

John J. Boncek says: “I bought this because the person who owned my jeep before me had a bad water pump and dumped in a ungodly amount of stop leak into it, in the 5 years since I have owned it I flushed it once when I changed the pump, had it professionally flushed 2 times and the system was still full of stop leak. So I figured I would give this a try as nothing else was working, and to my surprise it worked very well my radiator coils are nice and shiny now my antifreeze is green instead of brown, this stuff really
works. I can still see a couple of brown droplets floating around in the antifreeze but that’s all and that will probably disappear with next flush. would defiantly recommend to anyone who needs a really deep clean..

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13. Continental 65099 5/16″ ID Windshield Wiper / Radiator Overflow Tubing –

Continental Elite Radiator Overflow Hoses are tubing for use on windshield wiper systems, windshield washer fluid tanks, wet arm wiper tubing, radiator overflow tanks, and vacuum tubing. SAE J1037 Specifications.

Continental 65099 5/16″ ID Windshield Wiper / Radiator Overflow Tubing – 50 psi – 2.5′ Length

  • Goodyear Engineered Products are now branded Continental Elite
  • EPDM tubing for use on windshield wiper systems, windshield washer fluid tanks, wet arm wiper tubing, radiator overflow tanks, and vacuum tubing
  • Inner Diameter (ID): 5/16″ (7.9mm) | Outer Diameter (OD): 11.6mm | Nipple Size: 3/8″
  • Working Pressure: 50 psi | Temperature Range: -40°F to 257°F (-40°C to 125°C)
  • 2.5′ piece
  • SAE Specifications: SAE J1037
  • Precision engineered and tested
  • Show more
Most Frequently Asked Question:

1. What is the inner diameter of this hose?

5/16

2. How long is this tube?

About three feet. Barely long enough for an overflow hose.

3. Is it possible to get a 6 foot piece?

No. The length is 30 inches. Thanks.
What Real Customers Say About This Product?

Brian Dahl says: “Works well with overflow tank.
Works well with overflow tank..

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15. Hy-Per Lube HFL400 Hy-per Cool Radiator Cleaner & Super Flush –

Size:1 Pack Hy-per Lube Super Flush removes coolant gels and neutralizes acids in the cooling system. It cleans the entire cooling system preventing overheating and corrosion. High Performance Hy-per Super Flush cleans better that the leading brand. Environmentally safe formula can be safely flushed to drain with no environmental concerns.

Hy-Per Lube HFL400 Hy-per Cool Radiator Cleaner & Super Flush – 16 oz.

  • Eliminates Damaging Coolant Gels
  • Reduces Operating Temperatures
  • Neutralizes Acids That Cause Corrosion
  • Helps Prevent Formation of Scales / Deposits
  • Hy-per Lube Super Flush removes coolant gels and neutralizes acids in the cooling system. It cleans the entire cooling system preventing overheating and corrosion
Most Frequently Asked Question:

1. Can you use this in a yamaha raptor 660?

Yes you can. It is a part of the coolant flush. Use it while you flush the coolant to clean the system

2. Does it remove scale ? It only mentions it prevents it.

It does say on the bottle that it removes existing deposits.
What Real Customers Say About This Product?

Amazon Customer says: “Worked great! I had residue buildup in my radiator and overflow tank. I followed the directions on the bottle and used the whole thing on a four cylinder engine. Then flushed it again. The residue was gone. I noticed the engine did not get as hot as quickly and would cool down faster after running it hard. Will definitely buy this again.
Worked great! I had residue buildup in my radiator and overflow tank. I followed the directions on the bottle and used the whole thing on a four cylinder engine. Then flushed it again. The residue was gone. I noticed the engine did not get as hot as quickly and would cool down faster after running it hard. Will definitely buy this again..

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17. CLR PRO Automotive Regular Maintenance Radiator Flush and Cleaner, 24 Ounces

Size:6 Pack CLR PRO Automotive Regular Maintenance Radiator Flush & Cleaner, (Pack of 6)

CLR PRO Automotive Regular Maintenance Radiator Flush and Cleaner, 24 Ounces (Pack of 6)

  • Radiator Flush and Cleaner: Regular Maintenance Radiator Flush and Cleaner prevents scale and rust build up to keep radiators and heater cores running efficiently in new vehicles
  • Radiator Car Cleaner: Regular Maintenance Radiator Flush and Cleaner removes 5X more scale than the leading brand; CLR PRO Regular Maintenance Radiator Flush and Cleaner is free of ammonia, alcohol and phosphates
  • Quick Scale and Corrosion Removal: With an average 3 gallon radiator, CLR PRO Flush and Cleaner removes more scale in 10 minutes than competitive products do in 30 minutes while safe on aluminum, copper and steel when used as directed
  • Non Toxic Products: CLR PRO Automotive products are safer alternatives and contain no phosphates, ammonia or bleach; Non toxic and readily biodegradable
  • The Power You Expect, The Clean You Need: CLR PRO offers a full line of automotive products for professionals and DIY’ers alike, including Exterior Rust Remover, Hard Water Stain Remover and Heavy Duty Degreaser

We use standardized and scientific proven testing methods to scrutinize every product and provide you with objectively accurate results. If you’re looking for a 420cf radiator flush , this post is the right place for you. If you’ve found different results in your own research, email us and we’ll compare notes.

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