What mileage does your slant six powered ride get?

I like to at least go over 200 miles on the tank, but the more the merrier. If I can fill up at the same pump, that's even better. A 3 tank average is even better. Gas mileage is rated city/highway. Also, lots of hills play a part. This being said.....

• I had a '74 Dodge truck, slant six 1 bbl 4 speed. 24 mpg going back and forth to work at 55 mph. Yes, the odometer was accurate. I commuted 34 miles one way.
• My dad had a '68 valiant with a slant that got 28 mpg on the interstate. Like it or not, believe it or not, it's what it got. He drove from Colo to Wheatland, Wyoming to work. We also took it from Colo to Washington.
• We've had some that stunk at gas mileage too, because something was wrong with them.