I have a black 2013 1500 sport. I have noticed that I have greasy streaks (like the shine you see when oil spills on pavement in a parking lot) that are an absolute ******* to get off. I can literally buff and buff with clean bonnets / towels and they are still there. I use high pressure wash and hand wash with car soap. I towel dry right away to keep water spots off. I then apply a thin coat of Meguiars carannuba liquid black wax (stuff made for black cars). I use an orbital buffer to get the bulk of the wax off, and then hand buff with a clean microfiber towel. It looks amazing in the shade, but if the sun hits it, it is a damn train wreck. Any ideas? I am very meticulous and literally spend 8 hours from start to finish with this process. It is frustrating to say the least. Any help will be appreciated.