I have used water since day one and my Rad went after almost 200k. I am not worried if I can get even another 100k out of it, Oh BTW thats Km's. Thanks for the info anways, your help is always appreciated. I would have used distilled water if I had this info, at least my M5 will be getting distilled water from now on.

__________________
" Despite its supercar attributes, the M5 still doubles as a soberly practical, spacious saloon - only with the ability to scare four passengers in comfort all the way to the local coronary unit". Top Gear