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
2013 Ford F350 6.7L 4x4 CCLB W/Air Lift air bags
2002 Coleman Bayside Elite (traded)
Me, Momma and Charles (RIP buddy)
And introducing Sofie!! ;)