https://chemistry.stackexchange.com/questions/7467/is-pure-water-very-corrosiveYou could struggle through this one and decide. I'm not a chemist by any means but I think I'll stick with WallyWorld distilled water and SuperTech antifreeze. What you gonna' use instead? Stuff from your local water company or well? I don't know where you could find de-ionized water. 50 years ago you colud go to the fuel branch on any SAC base and they'd have it. As I recall, it was used in water injection for takeoff of the B-52s and KC-135s J-57 engines.
