yakky said:
I was hoping to be able to avoid using towels to dry. Both for regular washes and for just hosing a dusty car down, instead of QD'ing.
I agree with the others about potential residue/spotting from "untreated" water hiding in crevices. I also think Accum made a important point that it can really depend on the particular vehicle as to just how bad this sort of issue can be. For example, my wife's Forester has many more "problem areas" I have to deal with compared to my Challenger. Water continually leaks from sections of the tailgate trim, roof rails, etc. On my Dodge, the tail lights/front grille can be a bit of a challenge and the typical mirror area(s).
Personally, I have switched to doing my
all of my rinsing with the DI water in most cases (unless the car is really filthy) and using tap (filtered through soft water and sediment filters) for the soap solution/rinse buckets. I also pay particular attention to stubborn nook and crannies that tend to hold soap/rinse water by flushing them as thoroughly as possible (mirrors, grille, body seams, roof seams, door handles, etc.).
Admittedly, I am not as Autopian as some others are here but once my cars get the final rinse, I typically dry with an electric blower and that usually provides me with a spot free result overall (at least to my satisfaction). Any dribbles and/or residue left from them coming out of crevices I will take care of with a QD and MF towel as I do my walk-around. I usually find any residue quite soft and easy to remove likely due whatever it is (wash water, mixed in dust/dirt, etc) having been diluted with the DI water. Over 95% of the exterior painted panels I won't touch after using forced air.
It's just my own preference but I don't rinse my vehicles for the purpose of removing dust. I usually use forced air (either with a blower or air compressor) and live with what's left until the next wash. ....although I will clean the glass as I regularly do and perhaps the wheels using ONR.
In my case, I consider my CRS DIC-20 as one of the most useful and valuable tools I have purchased to date.