Re: rail dust\ brake dust... FML
Like these guys said, the NanoSkin AutoScrub is the way to go. I'm somewhat of a professional detailer, and it has worked wonders. I'm really amazed with how well it worked, compared to the standard clay bar.
Looking for a second 6.4L....
2008 F-250 CCSB King Ranch 6.4L
4" Rough Country Lift, Dual Steering Stabilizers, 20x10" XD Diesels, 35x12.50x20" Mickey Thompson MTZ's, Line-X, 15% Tint, MBRP 4" Cool Duals w/ 6" Tips, S&B Intake, Flo-Pro EGR Delete and Elbow, MBRP CAC Tube