It is OK to use DI water but it isn't necessary. The main requirement for the water is that it not be "hard". You don't want minerals to settle out of the water and coat the inside of the cooling system. It should also be at least potable as if it has a high microbiale content you could grow slime in the system. Depending on your area of the country tap water is usually just fine. Mix 50/50 with a national branded permanant type anti-freeze like Prestone and add till full. Bleed out the air and top off. Watch the level because if you have to add ANY after this it means you have a leak even if you can't see it. David Teitelbaum vin 10757 --- In dmcnews@xxxx, "Adam Price" <acprice1@xxxx> wrote: > Is it alright to use deionized water (with ethylene glycol) in the cooling > system of the delorean or other automobiles? > > thanks, Adam 16683 > > > _________________________________________________________________ > Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp.