I just love the "buy genuine Ford/GM/Chrysler(Fiat)/Toyota/Honda parts" thing. Ford is really pushing this with ads saying you should purchase over-priced tires, batteries, headlights, oi filters, wiper blades, belts, brake pads, oil, transmission fluids, brake fluid, etc. to ensure you get "genuine" parts for your Ford. Except that Ford doesn't make any of these parts; they source them from the same OEM manufacturers are the aftermarket guys do and them mark them up twice as much. Then the dealer sticks it to you with the labour / installation fees.
You don't need a Ford "technician" to tell you what type of tires to put on your Ford - it's written in your owners manual. Some of the OEM parts are really low quality. Ford Motorcraft spark plugs for example; use NGK, Denso or Bosch - actually anything else. When I bought my Honda, the dealer had installed really soft brake pads to improve test drive stopping performance. I had scored rotors within the first 8 months (San Francisco). I now use EBC or Hawk pads. OEM batteries are not much good in cold or hot weather (I now live in Canada). Get a DieHard or Optima. Does ANYONE use OEM branded oil?