Performing a radiator flush is something we should all be doing periodically on our vehicles.  Like any other fluid your car, your radiator fluid, or coolant will get dirty and wear out over time so it needs to be replaced.  The difference between your coolant and other fluids in your vehicle is the amount present and it’s function in your vehicle.  Most fluids in your car are primarily for lubrication and hydraulic force.  Your coolant is much different as it’s main goal is heat transfer.  To maintain your cooling system’s ability to transfer heat away from the engine and to the air, it’s important to keep things very clean.

How do you clean your cooling system?

Cleaning your cooling system during a radiator flush is an essential part of the process and the best way to do it is to use a chemical cleaning agent like BlueDevil Radiator Flush.  To learn how to use BlueDevil Radiator Flush, join me in the garage!

How often should I perform a radiator flush?

One of the most difficult parts of doing a radiator flush is deciding how often you should do it!  For the most part, the more often you can flush your cooling system the cleaner it will stay and the better your car will run.  Since flushing your cooling system isn’t free, most of us will probably wait until we’ve maximized the life of the coolant we’ve got in our vehicle now to keep costs down.

The first thing to observe the condition of your coolant to see if there are any visible signs that it’s time for a radiator flush in your car.  It’s best to check under your radiator cap when your engine is completely cold, or if it’s easier you can try looking in your coolant overflow bottle.  When checking your coolant condition, you’re looking for 3 main things:

Checking Coolant Condition:

  • Particles floating in the coolant
  • The color of the coolant
  • Oil slick on coolant surface

Particles Floating in the Coolant

Particles in your coolant indicate that there are excessive wear products in your coolant.  This usually means the anti-corrosion properties of the coolant have worn out and are allowing rust inside the system.  Rust in your radiator or engine block and significantly reduce the heat transfer capacity of your cooling system and can cause your engine to run hot.

The Color of the Coolant

Similarly, if your coolant is dark, brown or off color then there is something in it that shouldn’t be there.  In this case, it’s often tiny rubber particles from hoses or gaskets in your system so you should consider a coolant flush along with replacing any swollen or cracked cooling hoses.

Oil Slick on the Coolant Surface

If your coolant has an oil sheen on the surface it indicates your coolant is getting old and ready to be replaced.  Oil can get into your coolant from your engine oil system, from dirty components that were installed or simply indicate old coolant.  If you see an oil slick, it’s time to perform a radiator flush.

Even if you don’t have any of these indications, we recommend doing a radiator flush every 60,000 to 100,000 miles in your vehicle.  When you’re ready to get started, join me the garage for a quick lesson on how to flush your cooling system!

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