A smart move for anyone unsure of the contents of your cooling system.......use distilled water with your anti freeze. Not only do the minerals in tap or well water cake up your cooling system, but the metals and minerals in the water can promote electrolysis and therefore erosion of the water ports in your expensive aluminum head!

That is a very good point! well hopefully when I run a hose through it will flush out anything in there. Thanks for all the pointers guys!