I also have a 2010 F150, 5.4, 3:55, with the Advance Trac. It's nice to know it's there, but (as far as I can tell) it's never engaged. I really like, however, the hill descent feature that functions similar to a j-brake; it sure does save the truck brakes when going down steep grades at highway speeds...
2016 F150 CC Lariat, 4wd, 3.55, Firestone RideRite airbags, Max Tow pkg
2016 Whitehawk 28RBKS
Regular precious cargo- DW, and three rescued hounds