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How often should the radiator fluid be changed in a 2007 Chevy Impala? My car has normal driving conditions half of the time and long distance driving the rest.

Answers from the Automotive Experts

Helaine Kurot, Owner/Technician at 360 Automotive Dexcool is good for 5 yrs or 150,000 miles, which ever comes first. If it hasn't been done yet, changing it soon would be a good idea. You may want to have the radiator cap checked or replaced also. A faulty cap will cause the cooling system to fail prematurely.

Colleen McGee, Driving Instructor at Americas Driving School Every 150,000 miles or every 5 years, (If it is Dex Cool, not the traditional green stuff)

Barb Petrey, President - DBK Enterprises Inc at Jiffy Lube The information will be in your owners manual. If you don't have one, call the dealership and ask for service and they can tell you.

Amy Mattinat, Owner and Author at Auto Craftsmen Ltd Hi Tom, On average the coolant should be flushed [from the whole cooling system NOT just the radiator] about every three years. There is a very simple test to see what condition the coolant is in and whether or not it needs to be flushed. Using an 'Acustrip' - you dip it into the coolant and it will give you the results for the FreezePoint / Boiling Point, Reserve Alkalinity and PH. You can purchase the 'Acustrips' at a local parts store. You compare the results of the color of your strip with the chart on the side of the bottle. This will tell you if it is really time to flush the cooling system.

Amanda J. Pierce, MBA Tom, Dexcool in normal conditions typically has a life of 90k miles.

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