I just got the stuff others have talked about on here from FRED's or Dollar General and its called Awesome and really works great. Its best when you use it full power other wise stright on the surface but only do a small area at a time because it can dry back fast... it was only about 3$ for a 32 oz jug..
good luck thats my 2 cents.
Kid
2006 Ford F-250 Super Duty, Amarillo Special Edition 4 X 4 & 6.0 PSD,
Tow Haul/Tow Boss/Tow Command, 18" load E tires standard.
Me, a Wife and two crazy kids
2006 Holiday Rambler, Next Level 38FKS
West Marine's Boat Soap does a great job on black streaks, bugs, and road grime. Even leaves the rig shiny! Lots of stuff for use in and on RVs available at marine supply stores...
Steve & Bev
2005 Roadtrek 210
Carly the Sheltie
Zippy the Cat