Keeping Your Cool in the Cold – Flush and Replace Your Coolant

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Most of us know we need to check the oil level in our vehicles on a regular basis (here is your friendly reminder to do that this week!), but many of us forget to check our antifreeze level. With winter upon us –brrrrr!!!- be sure and check both level and condition of your antifreeze.

Cooling system failure is one of the most frequent causes of engine-related breakdowns (right behind not maintaining oil level), and the resulting repairs can be extremely costly. Did you know your engine produces 4500 degrees of cylinder heat when it is burning fuel?

Antifreeze, or coolant, is critical to keep your engine from either overheating or freezing. It maintains fluids in a liquid state by not allowing them to turn to ice (where expansion can be harmful) or to steam (where excess heat can do extreme damage).

The correct combination of water, antifreeze and coolant additives is essential for your engine to operate at the correct temperature (check your Owner’s Manual for your particular manufacturer’s recommendations). Generally, a 50/50% mixture of antifreeze and water is recommended, which protects against freezing down to -34 degrees and protects up to 263 degrees. Plain water would freeze in your radiator, and stop everything from working! Thus, antifreeze is required.

In colder areas, a 70% mixture can protect your engine down to -84 degrees Fahrenheit. But, don’t think more is better – a greater percentage (more than 50-70%) antifreeze actually offers less protection against corrosion.

Over time, harmful deposits will build up in your radiator and cooling system if your coolant is not flushed and replaced with fresh coolant.  The result will be increased corrosion and ineffective heat transfer within the system.   Antifreeze and coolant additives contain silicates, phosphates and/or borates that also keep the coolant solution alkaline (non-acidic), decreasing corrosion within your cooling system.

In newer cars, coolant will last for approximately 6 years, or 100,000 miles before it needs to be flushed and replaced. However, it is recommended that in older vehicles (pre-year 2000), coolant should be completely flushed and changed every 2 years, or every 30,000 miles, to maintain effectiveness.

How long has your coolant been in your car?? Now is the time to check when your coolant was last flushed and refilled, or talk to your favorite honest accurate auto technician and make sure your antifreeze level is adequate and clean. We are happy to do a complimentary level and quality check – drive safely!

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  • Honest Accurate Auto always gives me great service! I dealt with Heath and he did a great job(as always) of communicating the needs that My vehicle had and my options to care for those needs. These folks are great and never failed to help me when I have a need with my vehicle. Also for this oil change I was able to use an oil change card I had purchased, so it was done for a very reasonable price!

    Mitchell Buck 2/19/2021
  • I was desperately in need of tires and a new wheel for my spare after an unfortunate incident. Honest Accurate was able to get me a matching used wheel for a great price. They picked up and delivered my vehicle back to me with 5 brand new tires! Everyone was very friendly and helpful. I’m ready for Winter driving without a worry!

    Tory Travers 2/12/2021