De-ionising water filter

[jaydubveedub]

Browsing for detailing products I found this:

http://www.theultimatefinish.co.uk/aqua-gleam/0ppm-de-ionising-water-filter-30.aspx

Does anybody have experience of using these? I am guessing that you can rinse your car and you won't get water marks because the water doesn't have any hardness/limescale in it?

Obviously it's best to dry with a waffle weave but I was thinking this could be useful for a 'quick' wash in the winter to get the salt and muck off the car but I wouldn't have to dry it off afterwards.

[kdiz]

i think this is pretty obsessive and i don't belive it will not leave water marks on a solid black paint job anyway 

Dunno, id rather spend the £70 on other cleaning stuff that will be put to good use. In theory i guess it could work but again that £70 could be put to better use.

[dubber36]

If you rinse with an open hose as opposed to a pressure washer or a hose attachment, you can "sheet" the water off the car. This will leave much less water sitting on the car inbeads making it much easier to dry.

If you leave lots of beads on the car and not dry it, you will get water marks. Unless its raining that is.

[monzablue16v]

I just use my RO/DI unit for my saltwiter tank! leaves no residue as it's pure water