<strong>Yahoo Message Number: 40270</strong>Are there any superior cleaners that will actually stop the black streaks that always seem to come down the sides of the windows onto the body of the coach?<br/><br/>A number of yrs. ago a man was filling shelves at a good sam park with a spray cleaner that was guaranteed to stop that. we never purchased a can at that time to try it, but have been thru...