I know this topic has been covered a bunch of times. I didnt have a /6 then,but now I do. I just got back from about a 100 mile little jaunt and at last fill up I calculated 19.36 MPG.

In town I am calculating about 12 MPG.
How does that measure up?

These numbers come from a Slant 6 in a 1972 Dart Swinger Special with a 3 speed manual and 3.23 gears in the Rearend.