I go into a Advanced Auto store today and ask the kid behind the counter for the best colling system flush that they have. He says to be honest with you I drain the antifreeze and fill the syetm with water and put 3 tablespoons of cascade in the system. Run the car up to temp and then drain the system. Repeat 3 times and the results will be better than anything we have on our shelves. I am not a firm believer in kids at Advanced Auto who were born after my car was built. Has anyone ever heard of this? What do you use? My car has run hot since I got it. I want to flush my system good before replacing my radiator that sprung a leak yesterday after it was re cored.