Quote Originally Posted by bps02gtp View Post
i never attempted to come off as the "end all answer man". i was just wondering says who because i actually want to know who says its so better? GM? Ford? you? other forum ppl? when you do something like This then to me that means its very important and that you cant do it any other way. but you can. so instead of making such an end all statement with such a big font size you should say IMO distilled water is way better than tap and not make it seem like its the end of the world if you do something different. and yes actually i have been with 3 of the many many MANY cars i have done it to and they are all fine. i gurantee that if anything happens to them to where it doesnt run it wont be because of tap water. has anyone had a car go through its life span where tap water hurts? and when you say most people dont have treated water i assume that u mean they're using well water. all tho i could be wrong i kinda think majority uses city water instead of well. i wouldnt brush my teeth with well water so i kinda hope ppl wouldnt put that dirty crap in their radiator but idk. so yeah with ppl being able to make their own decision on here based off of peoples opinions it should be because they were informed that there is a right way and a wrong way not a must do because in someones opinion it is better way.
No problem... Here's one of the best explanations I could find on the net. I based my statement on something similar I read a very long time ago and can't remember where I did, so this is the next best thing.

Learning Coolant Fundamentals

Again, NYC Tap water is probably the best to drink, lol, but most of us have hard water in various forms. Home water while probably not so bad, if it (your water) is high in the hardness scale and you SOFTEN the water for home use, well then, I would suggest using Distilled water. Especially since most garden hoses are connected prior to the softening system/equipment.

My apologies as well, I wrote that response early in the a.m. and was not a good day, yes even that early. I think It came out worse than I intended.

Regards!