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.
〉 Answered on Sep 24th, 2013 by Helaine Kurot, Owner/Technician at 360 Automotive
Every 150,000 miles or every 5 years, (If it is Dex Cool, not the traditional green stuff)
〉 Answered on Jan 15th, 2013 by Colleen McGee, Driving Instructor at Americas Driving School
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.
〉 Answered on Sep 24th, 2013 by Barb Petrey, President - DBK Enterprises Inc at Jiffy Lube
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.
〉 Answered on Sep 24th, 2013 by Amy Mattinat, Owner and Author at Auto Craftsmen Ltd
Dexcool in normal conditions typically has a life of 90k miles.