[tom3]

On these V6 engines I'd not recommend any flushing due to the gasket problems that can crop up. Just drain the old coolant from the radiator and remove the block drain plugs as possible and refill with a 50/50 mix of new coolant. The newer coolant really does a good job and stays very clean anyway and just refreshing the antifreeze is all you need. That's jusy my opinion here under the shade tree of course.