what water to use for car coolant

[Rocketman]

I was told that by the water guy he said it can eat through copper not sure how true that is, pretreatment would just be tap water

Talking out his back side.

 

[the snooper]

I think clean rain water is pretty good too

i dont think there is such a thing a clean rain water, it picks up all sorts on the way down

 

[123hotchef]

i dont think there is such a thing a clean rain water, it picks up all sorts on the way down

and the crap it leaves on the car screen

 

[keithski122]

Shold I be saving all the condensation that I hoover up from the windows on a winter morning for my next coolant change or shall I continue using tap water like I have for the past 28 years as a mechanic.

 

[123hotchef]

Shold I be saving all the condensation that I hoover up from the windows on a winter morning for my next coolant change or shall I continue using tap water like I have for the past 28 years as a mechanic.

ha ha pmsl hoover the windows you need double glazing mate lol