Go to WalMart or AutoZone and get a Prestone flush and fill kit, it has a Tee that splices into your heater hose so you can back flush the cooling system with a garden hose, and a diverter that snaps into radiator filler neck. Get a jug of radiator flush and follow the directions, then back flush. When your done you add antifreeze into the tee and it displaces excess water out of the radiator filler neck, insuring system is completely free of air pockets. I have these on all my vechicles and flush them every two years. I can flush the radiator in 20 minutes without any tools, and without even getting dirty.