OK, no I do not wax every time I wash the car. I usualy wax at every oil change. (well, I have been so last latley that I wax allmost every time I wash )Vinegar will not etch the glass unless it is some scary vinigar. Glass is one of the toughest surfaces around... much tougher than you stomache (if you put large amounts of whiskey on glass, it wont thro up.) Yes, white vinegar would be better, but I ususally just use what I have.... I only vinegar when I have hard water spots, and I avoid thm like the plauge/ It seems I end up using vinigar after every time I take the blazer and go wheeling/..... Hmmm that means the wife parks the SVX where it can get wet, but the blazer NEVER gets spotted.....