TCL
New member
I currently use AIO under UPP for our daily drivers. I'm about to replace my "fun" car and appearance is more of a priority than durability. I'm wondering whether using AIO under UPP or Blackfire will alter the appearance of the overall finish? Has anyone used one of these two sealants with and without an undercoating of AIO? If so, did you notice a difference in appearance with and without the AIO application? Hoping to save myself an experiment. The new car is a medium metallic red if that makes a difference.