How do you flush radiator on Ford five hundred?

To flush the radiator on a Ford Five Hundred, first ensure the engine is cool and disconnect the negative battery cable. Drain the coolant by opening the radiator drain valve and allowing it to flow into a suitable container. Next, use a garden hose to flush water through the radiator until it runs clear, and then close the drain valve. Finally, refill the radiator with a mixture of coolant and water, start the engine, and let it run to circulate the new coolant, checking for leaks.