DMark1, a fellow FGT owner just got his oil changes at the dealer in Plano (Five Star Ford of Plano). He said they were very good and allowed him to drive his car back to service and sit there with car as oil was changed. They sound very friendly.
I left my GT at Park Cities Ford overnight to get the 2 airbag recalls done, oil change, new rear hatch struts, battery, and cleaning of the ground strap bolt at the frame. I arranged for the dealer to order all the parts, so that it could be done quickly. When I found out about the airbag recall, I decided to drop it off at 2pm today, hoping to get it out tomorrow afternoon. They agreed to keep it inside overnight, and only have the shop manager drive the car.
They did a thorough walk around of the car, and I made a photo of the odometer before I dropped it off. They claim to have 5 GT qualified mechanics there, and it is one of the 2 dealerships who have my name on the fictional list for the next GT.