A cooling system flush drains the old coolant, clears the deposits that build up in the radiator and heater core, and refills with the correct coolant for your engine. Worth doing before a Charlotte summer rather than after one. Call 704-842-9774.
We flush, refill and bleed the system where the vehicle is parked, then run it to temperature to prove the air is out.
Correct Coolant Type
Coolant types are not interchangeable. Mixing them turns the fluid to sludge, so we use the specification your engine calls for.
Book Before Summer
Call 704-842-9774 in spring. Old coolant loses its corrosion protection long before it stops looking like coolant.
We test the old coolant, drain the system, flush the deposits out, refill with the correct type and concentration, then bleed the air and run it up to temperature.
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Year, make and model tell us which coolant specification your engine needs and how much the system holds, so we arrive with the right fluid.
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While the system is open we check the hoses, the cap, the thermostat housing and the radiator for the leaks that only appear once the deposits are washed away.
3
Refilled to the correct concentration, air bled out properly, then run to full temperature to confirm the thermostat opens, the fan cuts in and the level settles.
Coolant protects against corrosion as well as boiling, and that protection fades with age. In a climate that runs this hot, old coolant is a real risk rather than a maintenance formality.
Coolant does three jobs: it carries heat away, it stops the metal inside your engine corroding, and it raises the boiling point. The corrosion protection is the part that wears out first, quietly, while the fluid still looks perfectly fine. Once it has gone, deposits build up in the radiator and heater core and the system’s ability to shed heat drops just as the weather demands the most from it. Charlotte logged 72 days at or above 90 degrees this past summer against a normal 44, and in stop-and-go traffic there is no airflow through the radiator to make up the difference. Flushing on the schedule in your manual, rather than waiting for a temperature warning, is what keeps that margin intact.
Coolant does three separate jobs, and they do not wear out together. It carries heat away, it raises the boiling point, and it stops the metal inside the engine corroding. The corrosion protection is the part that fades first, quietly, while the fluid still looks the right color in the tank. That is why the schedule in the manual is the honest guide and the appearance of the fluid is not.
Once that protection has gone, deposits form in the radiator and the heater core and the system sheds heat less well, exactly when hot weather and slow traffic are asking the most of it. A flush at the interval replaces the fluid and clears what has built up, which keeps the margin the system was designed with instead of discovering it has gone on the hottest day of the year.
The flush-related calls that come in most often around Charlotte, and what each usually turns out to be.
Coolant that has gone brown or muddy. The corrosion inhibitors are used up and deposits are circulating. A flush at that point is cheap; waiting until the radiator blocks is not.
A heater that blows cool at idle but warms up once you are moving. Often a partly blocked heater core, which is the first thing to clog when coolant is past its life. Two different coolant colors mixed in one system cause the same trouble, because mixed types can gel and stop flowing.
Common questions about cooling system flushes: how often, which coolant, and what else gets checked while the system is open.
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Cars, SUVs, light trucks and vans of all makes, using the coolant specification each engine requires. Heavier trucks go through our truck repair service.
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Follow the interval in your manual, which is commonly somewhere between 30,000 and 100,000 miles depending on the coolant type. Call 704-842-9774 with your details and we will tell you which applies.
3
Yes. Once the corrosion inhibitors are spent, the coolant starts attacking the metals it is meant to protect, and the deposits that result reduce how much heat the system can shed.
4
Hoses, clamps, the pressure cap, the thermostat housing and the radiator itself. Deposits often mask a weeping seal, which shows up once the system is clean.