Hello All, I am looking for the Easiest and Best. RV cleaner out there. I am specifically looking for a product that will easily remove the dreaded black streaks(Aluminum sided trailer). Keep in mind I don't want extra work. something I could towel on/towel off possibly with a wax added for a bonus. I have 3 different cleaners currently and only 1 of those 3 works semi decent. I am open to recommendations. preferably something you have used that works well. Thank You