Grumpy374 wrote:
Pretty much any of the popular cleaners like Greased Lightning, Purple Power, Mr. Clean, dish washing soap, ect. will remove/strip your wax right off. Auto car washing liquids will not take the wax off, but they won't remove black streaks. It's a Catch 22. If it's forumlated to remove grease, like the above stuff, it will strip the wax.
Grumpy
My RV didn't have any severe black streaks, but it had a few. My dealer told me to use Mineral Sprints on the streaks and to wipe off the excess right after.
This worked for me.