Hello, I’m about to get a Chevy (1963er). Looks like a Impala but it’s supposed to be a BelAir. Now the question is, he has a 6 cylinder with 140 hp in it and three gear circuit. The current owner has no idea what he consumes, because it was a pure FUN mobile for him he didn’t pay attention to it. Now the question to the experts here. What about the consumption? With 15 liters of inner city I can probably live. Since it is supposed to become a daily driver, is no longer in it! Or mu Do I adjust here to 20? Greetz Ben picture of the engine hangs on… engine capacity 3200 ccm