The 6 Best cooler line flushes (2023 reviews)

It is easy to flush a whole system without a complicated recovery system for the flush. It is formulated specifically for high-temperature applications. It is used to flush truck ac components during replacement service of system components. This works very well and is also biodegradable making it easy to flush a whole system without a complicated recovery system for the flush.

This will evaporate after it’s sprayed through the system. It is a good insurance policy that the internal parts of the ac system are clean. It doesn't pump out in any reasonable time.

Why We Like This:

Removes old oil & other contaminants
One of the new comers and featured product

Best for common failure point: Irontite cooler line flush

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The irontite cooler line flush is capable of outshining several other flush featured in this list in overall features for the price point. It's also important to "Rinse" your cooling system well after using Thoro-Flush and you don't want to leave it in too long as it will start to break down soft materials like gaskets and hoses. It will flush the entire system at one time. It will remove'stop leak' sealant products and will damage the heater core and trans coolers if left in too long.

It is truely commercial grade and also cleans out plugged heater cores. It will eat through any really bad rust areas, like radiators. The heat and pressure helps to activate the cleaning action. It can be used with a flushing machine or simply as a manual flush.

Why We Like This:

Flush 's abilities so that needs to be taken into consideration
Great product for dexcool sludge removal
Clears out gelled dex-cool with a simple flush
Run engine about 10 minutes at operating temperature

Best with hose: Lubegard cooler line flush

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate flush. The lubegard cooler line flush is exactly that - it's a simple flush that hits all the right notes. It is a must when cleaning out your transmission lines. This product is used to clean your transmission lines/coolers, so disconnect them from the transmission itself and then use the product to clean and flush the lines/coolers. It will insure there are no contaminates, metal debris or blockages inside the cooler. It will save you from rebuilding the transmission again.

It turns very, very dark and appears very sludge-like for a few seconds. It will not leave behind water or soapy residue to contaminate the transmission lines and cooler lines. It can be used for either, if built into the radiator, it is still a separate cooler.

Why We Like This:

Great to insure your transmission cooling system is cleaned of
, safe to use for flushing the lines, and trans cooler
Very smooth tool, the built in fittings mated perfectly
Worked good enough to flush a used radiator transmission cooler

Best with garden hose: four Seasons cooler line flush

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Next on the list, we've got yet another flush that manages to win our hearts. It's the four seasons cooler line flush and it's widely considered as flush that has the most suitable features. This is an air conditioning system to flush. It can be used on a new ac installation to clear out old oil and any r134a residue. This smells quite a bit like mineral spirits, but has a much faster flash (dry) time. It cleans out ac lines very well.

A co2 tank of similar size also holds more because its a liquid and then expands to gas unlike your nitrogen tank which is already a gas. It does a great job and blows harder with more solvent than brake cleaner cans. The system is also a factor because you may flush more than once to clean a system where the gas is already a gas.

Why We Like This:

Super low temp of latent evaporation
Has a very low boiling point and will evaporate very quickly if not capped
Very flammable and not fun to breathe do outside or ventilated building

Best quality radiator flush: Bluedevil products cooler line flush

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If you want nothing but the best desirable flush, then bluedevil products cooler line flush is the one you should definitely consider, as it manages to bring a lot to the table. BlueDevil Products manufactures a wide variety of stop leak and performance chemicals to meet the needs of all consumers. This product used with the gasket sealer is pure GOLD. The stop leak also fixes a small external head gasket leak. It does a good job cleaning out the radiator.

Why We Like This:

Easy to use and cleans harder than mr clean himself
Delivers what they promise

Best with transmission cooler system components: Genuine Chrysler cooler line flush

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We would, of course, be remiss if we didn't mention genuine chrysler cooler line flush for daily purpose.

Why We Like This:

Good investment for long term
Lot of satisfied buyers