So I had some time on the holiday break to do some work on my faded windshield cowl. I used Cquartz Dlux which is a semi permanent coating that last up to a year. I have already used this on the window sills and the black plastic roof rails going on 6 months now and they still look like new.
I recommend using this on new or faded trim to protect it from the elements.
This is how badly faded it was before I cleaned it and applied Dlux.
Here is the right side coated with Dlux.
This is how it looks in the sun done completely.