I decided to try Turtlewax ICE on my TC. I know it's not wax, but according to my online research the synthetics are better at blocking UV and they last longer. A big advantage, for me, is that ICE goes on clear and stays clear. So it works on black plastic just as well as Back To Black. Another big advantage -- it took less than two hours to apply and buff ICE.
I also use Simple Green on my engines. A 50/50 mix works great.