First of all, no offence, but I have never heard anything so ridiculous as what s60 claims in his last post. That is, until I read Mike's post about "radiator water".
Distilled water is simply pure water with nothing else in it. The evaporation, condensation cycle that results in rainfall is a natural distillation process. Mechanical distillation is the exact same process. For information on distilled water you can go to :
http://www.aquatechnology.net/index.html. Chemically, there is no reason that pure water (distilled) could, or would be harmful to a cooling system in a vehicle.
According to my local MB dealer, distilled water would be the IDEAL type of water for use in your radiator. Distilled water is also used to top off your battery...
I am open minded, and willing to learn new things, so perhaps, s60 could let us know where these articles he read came from, or if they are available online?
The most important thing about coolant is that it is changed at least every three years, or 30,000 miles.
BTW, I called around to six auto parts houses to see if they had "radiator water". Everybody got a laugh out of the question, except for the third one, who hung up on me.
Also, I checked Prestone's website:
http://www.prestone.com, and they don't show any such product.
[Edited by longston on 01-15-2001 at 02:54 PM]