De-ionized water for car/van screenwash

Anybody tried it?

theoretically it would work and then just add a little alcohol in.

Yes I have used it in mine on odd occasions and top off with screen wash 

I always use it in my screen wash

I use the Waste water from the R/O ?

Part Timer said:

I use the Waste water from the R/O ?

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There’s a question I got asked for the first time ever 2 weeks back - “for every 1000lts you make, how much waste is discarded?!! 

I was surprised to be asked such a question, and I had to answer truthfully. “I did know, but have forgotten!” ? Terrible answer ?

I use it for my screenwash all of the time!