Does My Car Need a Coolant Flush?

We all know that our vehicles require regular maintenance to keep it running safely and reliably for a long time.  Most people change their oil at some regular interval, which is one of the most important and cost effective things you can do to make sure your car doesn’t take an early trip to the scrap yard.  Also high on that list is to change the transmission fluid at the factory recommended intervals, but many of us don’t think about replacing our vehicle’s coolant if the car isn’t leaking or overheating.

Is it really necessary to change your vehicle’s coolant?  It’s always best to follow the manufacturer’s recommendations for maintenance, so why do most automobile manufactures recommend replacing your vehicles coolant periodically?  Can antifreeze really go bad or wear out?

Coolant Flush, need a coolant flush
Over Due for a Coolant Flush

To answer all these questions we will take a look at what antifreeze, or engine coolant, actually does.  The internal combustion engine could also be called a heat engine because it uses heat to cause gases to expand and uses the engine’s pistons to gather mechanical work from these expanding gases.  Due to the temperatures present in an internal combustion engine, there will always be left over heat after each cycle.  This excess heat needs to be removed to keep your engine at a constant temperature where it is able to continue working.  The more quickly this excess heat can be removed, the more efficient the engine will be.  The original internal combustion engines were air cooled, but water cooled engines were designed to take advantage of this principle.

Coolant Functions:

  • Heat transfer
  • Lubricant
  • Corrosion inhibitor

The main purpose of the coolant in your engine is to remove the excess heat through the radiator.  Engine coolant is also called antifreeze because chemicals are added to keep it from freezing in cold climates so you can continue to operate your vehicle.  The engine coolant is circulated through your engine block, radiator and heater core by the water pump.  The water pump spins near the same RPM as your engine, so its bearings need to be cooled and lubricated.  The antifreeze in your vehicle therefore is also a lubricant for the water pump.  Lastly, it’s important for your cooling system to remain clean, even on the inside to promote good heat transfer so your coolant also is a corrosion inhibitor for the various types of materials it comes in contact with.

Coolant Flush
Corrosion in a Cooling System

The main reason to regularly change your antifreeze is to protect your engine from internal corrosion.  Antifreeze contains different chemicals to maintain the pH levels and to keep the various materials from corroding.  Over time, these chemicals are depleted or precipitate and will no longer protect your engine and cooling system from corrosion.  Over time, this can lead to costly leaks and component failures.

 

Replacing your vehicle’s coolant is the best way to prevent future cooling system problems.  Every time you replace the coolant, it is best to perform a cooling system flush as well.  This will ensure that any depleted antifreeze, precipitants or corrosion products are completely removed from your vehicle’s cooling system.  With the old antifreeze removed the new antifreeze will be able to better resist corrosion and with the precipitants and corrosion products removed, heat transfer will be restored to its maximum.

To flush your vehicles cooling system completely and easily, use BlueDevil Radiator Flush.  Its concentrated formula has advanced cleaning agents that will remove all of the build up from your vehicle’s cooling system due to regular use, or many miles of neglect.  BlueDevil Radiator flush is a small price to pay to know your vehicle’s cooling system is operating at its maximum efficiency and replacing your vehicle’s coolant after the flush will make sure your engine is protected from internal corrosion.

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You can find BlueDevil Radiator Flush at your favorite auto parts store:

  • Advance Auto Parts
  • Pep Boys
  • Car Quest Auto Parts
  • Bennett Auto Supply
  • Autozone
  • Prime Automotive

Or you can purchase BlueDevil Radiator Flush online here.

Pictures provided by www.cherokeeforum.com and www.aprilliaforum.com

 

4 responses to “Does My Car Need a Coolant Flush?

  1. How do I perform a coolant flush on a 1994 Chevrolet caprice classic 5.7 engine. What kind of Antifreeze should I use?.

    How to mix properly distilled water and Antifreeze to make 50/50???.

    Is 50/50 best for my vehicle?.

    Does dex cool Antifreeze kill your radiator?. Difference between the Green Antifreeze & the Orange & red dex cool???. What size pan should I put Underneath The flush Radiator Plug??. Thanks

    1. Prime,

      Thanks for your question about your Chevy Caprice. In your vehicle, you can use regular multivehicle green antifreeze available at most auto parts stores. Your vehicle holds a little more than 4 gallons of coolant so we would recommend draining it slowly into the largest pan you can find, and empty the drain pan a few times while you are draining the system. If you’re worried about diluting the antifreeze you purchase, you can purchase premixed antifreeze to ensure you get the correct mixture. If you decide to mix it yourself, you can try finding a large container with measure marks. The antifreeze you purchase should give you a list of temperatures a 50/50 mix will give you freeze protection to so as long as it doesn’t get colder than that temperature where you live, you should be fine.

      Thanks again for your question!
      -BD Auto Pro

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