Thanks.
Years before I read a lot about saving fuel, talked to my mechanician, made experments. Just the fuel I filled in after 600 miles helped a little bit only. There were so many influences that made it impossible to realize why it was more or less.
So with this car the base-line MPG was 60, even better than the official fuel economy rating by Ford (52 MPG).
Today I had a trip of 80 miles and the car reached 79 MPG
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