[Sloan]

LoveBunny, you need to be extra careful with a black finish. The clear-coat on essentially all cars is vulnerable to swirl-marks, but it is much more visible on black finishes than others. Many mobile detail folks make compromises, whether it be with contaminated wash & rise water, or dirty polish & drying towels - and just once can be enough to do damage that it will take a professional to fix. In my opinion, you are better off going a little longer between washes if you must do so to make sure it is done properly. Perhaps one of the 'locals' on this board will be able to suggest a place or person you can trust to do it safely.