I have a 2012, 6.2L Raptor with 258,532 miles. The only major work I had done was Upper and Lower ball joints, which is to be expected given the miles. Routine maintenance is performed at regular intervals and the Raptor still runs strong. The Ford dealer where I had the ball joints replaced services two (2) Gen 1 Raptors each with over 300,000 and no major engine work. They are built tough for Baha runs and are over-engineered for daily driving.
So by
routine maintenance you mean all 16 spark plugs, plus coils, plug wires, hoses & belts, engine oil & filter, trans fluid & filter, recharging the refrigerant, cleaning or at least pressure testing the injectors, rebuilding or replacing the Fox 2.5's, plus brake pads & rotors, brake fluid, front and rear diff fluid, transfer case fluid, the battery, the IWE lines, and several sets of tire?