x2 for La's Totally Awesome. I use it all the time and it absolutely destroys the black streaks. No rubbing..nothing. Just wipes off. Super cheap and works fantastic. Amazon sells it as well.
2013 Jayco Eagle 328 RLTS
2012 Ford F250 6.2L 4x4 CCSB W/Air Lift air bags
2002 Coleman Bayside Elite (traded)
Me, Momma and Charles (RIP buddy)
And introducing Sofie!! ;)