sorry fella, i've been calling it by the wrong name, as you get older names are meaningless, the ones that count are the ones that you give to things/people 
Seriously, I bought it a good couple of years ago so the name has obviously escaped me. It's actually Poorboy's Natural Look. It is an APC in as much that it lists that it can be used on vinyl, leather, tyre dressing, etc but it is known for restoring OEM look to plastic trims - other dudes use it achieving similar results so it is definitely proven for use in this task.
No worries
I was just thinking this guy will be disappointed when he goes to work tomorrow and finds all his work has gone back to gray and faded if he's only used a apc.
I found using 303 that it was a breeze to do the grills on the front and had them done in no time, from what I know the poorboys dressing isn't a spray type but 303 is so it will be quicker and easier using a spray type on the grills I'd say and it'll say you time.
When I snow my car I use one of my little brushes and give the grills a quick clean as the snow foam dwells then after I've washed car etc I spray the 303 onto the grill and use a brush again to get it into the honey combed grill, leave it for a hour and then finally wipe up any excess. No ball ache what so ever, pretty quick and easy
