I purchased the teflon coating wax for my car earlier this year. After washing the car several times, I have much swirl marks, easily seen on black cars. Now I'm thinking, if I use Zaino Z-7, do any of you think this will affect the teflon wax I currently have on the car?

 

Z-7 should be safe, since it's not supposed to remove any wax. I tried it when I had my buildup of Z-5, and sure enough, it didn't remove any of it.