I have always used Back to Black product for the black plastic parts (cowling, step rails, etc.). The other day I was trying out some new tire gel from Meguiars and put the rag i was using to wipe the tire on the the black step rails and I took it off and the black plastic looked like I just cleaned it. I left it as is and after a few days it was still looking great so I decided to try the tire gel on all the plastic parts and compared it side by side with Back to Black and it wasnt close. The Tire Gel stuff from Maguiars did a much better job of bringing the black plastic back to life. Its not shiny like a gloss either. I am not sure how long it will last but I will keep you guys posted. I found it interesting it worked so well.