I have ran my 2012 silver through a touch less several times and it does a pretty good job. I haven't noticed any damage? I get them for free and it's a quick high pressure spray that seems to do the job and a blower at the end that you can fully take your time on blowing it dry! I have read the manual about chems that are harsh but I use the soap and water option. No complaints yet..... No damage I can see after about 20 washes so far? Looks better then when i pulled it out of the dealers lot.. So guess when I notice something like spots I will complain? So far so good! I don't have 3 hours in my busy life to go and detail the Z every week. Seems ok to me....
