I was hoping the Ranger was the oldest in our collective circle. Oh well. My FIL drives a 1984 Ford diesel in Alaska , possibly as the original owner, and it’s still going strong. My DH drove it when he was in high school and summers home from college. That was the 2nd oldest vehicle in our collective family circles other than the Ranger. But tell your Dad that he might win the contest. And that if he ever wants to sell that truck, call me…….