Local Ford Service manager told me to never use it on exterior plastic/trim, as it will turn the F-150 black trim grey in time.
I use to use it on our old 92 Mazda 626..and it certainly did turn the exterior trim grey. It was so bad that I had to constantly use the stuff to keep it looking dark in color.
I've never had a problem using it on interior trim over the past 15 years..however...I do not use it in or on any of our new vehicles. I don't care for the smell of it or the gloss (even low gloss formula).
2000 F-150 XLT, 4x2, 5.4L Supercab, Superchip, Styleside, Black with silver two-tone, 3.55 rear, class III towing package with super engine cooling/Auxilary transmission cooling HD package, Heavy duty shocks, 4 wheel disk ABS, overhead console, sliding rear window, keyless entry, dark graphite interior, in dash CD, factory leather wrapped steering wheel, FORD bedliner, FORD black tubular cab steps, K&N air filter, mar-hyde rubberized undercoating, Modine climate filtration system, Bugflector II, Mobil 1 oil, build 7/2000