How Often Does My Car Need a Radiator Flush? | YourMechanic Advice

How Often Does My Car Need a Radiator Flush?

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A radiator is part of the internal combustion cooling system in a vehicle. It is a form of heat exchanger, designed to transfer heat from the heated coolant mixture as it flows through the vehicle. Radiators operate by pushing hot water from the engine block through tubes and fans that allow the heat from the water coolant to dispel. Once the liquid is cooled down, it is returned to the engine block to absorb more heat.

The radiator is usually mounted in front of a vehicle, behind the grill, to take advantage of the air that flows as the vehicle is being driven. Those with a fan normally have either an electric fan; that is usually mounted on the radiator, or a mechanical fan that is mounted on the engine.

Cars that have an automatic transmission, however, have a cooler included in the radiator for hot transmission oil.

What is a radiator flush?

A radiator flush is done to prevent a vehicle from overheating and help maintain an efficient radiator system. This procedure is done by draining the original coolant from the radiator and replacing it with a new coolant or antifreeze mixed with water. The mixture or solution is then left to circulate through the vehicles’ cooling system so that it can dissolve and remove any solid build up inside the radiator channel. When circulation is complete, the coolant or antifreeze mixture is then drained and replaced with the standard mix of coolant and water.

How often is a radiator flush needed?

There is no set rule for how often a vehicle needs a radiator flush. Car manufacturers recommend that it be done at least every other year or every 40,000 to 60,000 miles. Occasionally flushing the radiator before that period is not a problem as it helps to clean and prevent build up of dirt and sediment. Fresh antifreeze also contributes to protecting a vehicle from extreme cold or hot temperatures. A certified mobile mechanic from YourMechanic can come to your home or office to flush your coolant or inspect why your car is overheating.


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Chris

21 years of experience
1861 reviews
Chris
21 years of experience
Mini Cooper Clubman - Brake Pads Replacement (Rear) - Silverado, California
He arrived early, went straight to work, and it should have been quoted higher as it’s a Mini which takes longer than the average break job. He didn’t try to get more than the quoted amount. He even set out to replace a running light for me when he was finished. I thought there would hard sales telling me I needed more work but there wasn’t. Because he didn’t try to sell me more work, I will use him again. When I hired a mechanic I don’t want a salesman. 
Land Rover Range Rover Sport - Brake Pads Replacement (Front) - Irvine, California
Chris again has provided great Service. Everything was great. I was very happy with the work and will definitely have him return for any other work.

Bryant

11 years of experience
408 reviews
Bryant
11 years of experience
Ford Fusion - Brake Pads Replacement (Front, Rear) - Indianapolis, Indiana
Bryant has done great work on my car before, the latest work is no exception. He's very flexible, and goes the extra mile to get you back on the road.
Scion iA - Brake Pads Replacement (Front) - Carmel, Indiana
This is my first time using this service. I am very happy with it. Bryant was very knowledgeable and did quality work. I will use this service more regularly.

Edmar

21 years of experience
184 reviews
Edmar
21 years of experience
Chrysler 200 - Brake Pads Replacement (Rear) - Euless, Texas
Edmar always does a very good job. He's done a few different things on my car the last two years. Each job was performed very fast and top quality. Thank you once again.

Mazyar

7 years of experience
255 reviews
Mazyar
7 years of experience
Jaguar XF - Brake Pads Replacement (Rear) - Lawrenceville, Georgia
He was early, courtesy and actually helped me save some money since i didn't need all the work that i thought i needed done. Honest guy. Very knowledgeable. Great attitude.

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