One thing about the top of the 06 Mustang dash is that it is made of a hard plastic that is painted. I don't know how protectant will absorb into the material, but the combination of the hard plastic and the paint Ford uses makes it tough to apply it uniformly. Other examples are the darker colored sides (and center "hump") of the F150 dash, where the air vents are located. I suspect it is not meant to be glossy. the newer Fords are getting that way, although the fusion/freestyle has dash material that would lend to a good protectant application--if needed.
I have not used my 'good' protectant (303) on these plastics, just an armor-all knock off. Mostly because they do not need it, in my opinion. The 06 Mustangs I have detailed so far are pretty clean interior-wise; the real work is saved for the exterior. But we will see as the new versions come in "more used". In fact I will do a GT on Monday, and I'll let you know what happens. One more thing: The thick, hard plastic trim around the shifter is not painted, however, but also likely not too receptive to protectant. But we shall see.
***Not only do we have to worry about adding protectant to painted surfaces, CLEANING these surfaces is going to be a bigger problem in the future. More and more companies (virtually all of them) are painting more and more surfaces of their interiors. In the case of Ford, they are usually the panels that get the most abuse! (door handle recesses, window control bezels, arm rests, seat trim, ...even floor trim! ) This is done to give a 'texture', and therfore more quality "feel" to the components. Instead of making a piece out of better quality plastic, it costs less to spray a rubbery coating on it. When the paint wears off, however, it is almost the same color as the plastic underneath! it's crazy! So be careful scrubbing certain panels!
