those flush kits you can buy from the parts stores are ok to use IF you dont keep the fittings on the car. you have to either cut or tape in the lines to the heater core. then you use the supplied fitting to get the old stuff out and new stuff in. but those plastic fitting are cheap. they crack and leak after short amount of time. so you use this kit, pleae remove them to prevent possible head aches. or you can take to a shop and they can use there coolant flush machine. and lastly you can do the poor mans flush. drain the radiator, refill. drive around for a day or two, and repeat. you get "most" of the cooland out, but its still mixed together so yo dont really know. still better then nothing.