Check this thread out:
http://www.yellowbullet.com/forum/showthread.php?t=563112&highlight=water+wetterLots of comments both ways on it's use.Myself I had some start reacting with water over time(drag car unable to use anti-freeze) and it created pressure that would shoot water out of the radiator if you lifted the cap(the car had been sitting for a week).I switched brands after lots of flushing and haven't had that issue again.
