I don't use it on the orange, interior or place I regularly touch.
Undercarriage and engine mainly. It's actually a decent belt dressing but like BC, I don't spray on/in the alternator.
When you put it on, it's going to be slick, like an oily coating and it's going to stay that way for a pretty long time (like months) if you don't wash it off.
I use it everywhere.
Door hinges in house.
Moving parts on garage doors (including the scrolls and chains for the openers).
Undercoat my truck (use the 1-gal thick stuff and an air undercoating gun).
As mentioned, the RTV.
Anything that's left outside in the winter (scraper blades, box blade, rototiller...). Come Spring, there's no rust on any of it.
Underside of mower deck to keep grass from collecting.
Belts on truck, mower deck...
Battery terminals/electrical connections.
Inside/bottom of vehicle doors where you traditionally get rust.
Window crank gears for house casement windows.
Bicycle brake cables (unless I need it to seep inside, in which case I use Kroil)