Fluid film is ok for your lawnmower, but there are far better choices if a new truck. I've tried the fluid flim route on my old tundra, and got sick of seeing it all wash off in a few months. I did some research finally choosing cosmoline. 2 good coats of that stuff over 3 years ago, and it's still 99% still there, just minor touchups in the rear wheel areas. As far the odor, idk which has a stronger aroma. Imo, fluid flim has a funkier stink to it.
Smart move having the exterior paint ceramic coated. I had done the same to my truck before it left the dealers lot. Gotta be careful who actually does it. Some shops charge premium prices, and don't use long lasting products. From what the shop told me, I never was to wash or wax my truck ever. So far I haven't, and it still looks like it came straight from the dealers showroom.