How do you flush radiator on your 2005 Mazda 6?

To flush the radiator on your 2005 Mazda 6, start by allowing the engine to cool completely. Remove the radiator cap and drain the old coolant by opening the drain valve at the bottom of the radiator. Once drained, close the valve and fill the radiator with a mixture of water and coolant flush solution. Run the engine until it reaches operating temperature, then turn it off, let it cool, and drain again to remove any contaminants before refilling with the proper coolant mixture.