Lady who was part of the ground crew told me how much it costs to fly the old bird. I don't remember exactly what she said but the word "thousand" was in the answer. I watched a crew member pour 6 gallons of oil into it. He said it uses a gallon per hour/per engine. Straight 60 weight. No wonder they take so long warming up the engines before they give them any throttle.
It ain't a B-17 but it is living history in our backyards. In Anderson today thru the weekend. See you tomorrow?
https://www.eaa.org/en/eaa/flight-experiences/fly-the-ford-eaa-ford-tri-motor-airplane-tour