Heh heh, yet *AGAIN* my experiences differ from Scottwax's! IME (and I've used M16 for decades, first used it on my bicycle in the '60s) it *can* stain trim. Not the the point of "it *will* stain* but it can if you don't buff it off immediately.
Other than that I still like it and it's what I'm using on my wife's daily driver. Somewhat "bright" IMO, not something I'd like on a dark or "rich" color, though I did use it on black and red back in the days of factory single stage (I'd recommend M26 for those instead).
I especially like using M16 via machine, it's "the paste wax that turns liquid" when used that way.
Don't apply too much! Thin thin thin. Don't miss any spots when buffing it off as they'll be a real PIA after a few weeks (gee, guess how I know).