Had to post this here too...
On the way to Houston last week I got a staggering 21.06mpg in my Z!!13.94 gal and 293.7 miles on the tank.
Pretty kickass!
On the way back it dropped to a mere 18.03mpg.16.09 gal on 290.2 miles. Nice 20mph headwind.
Average them... 19.54I can dig that all the time. Not bad IMO for a 5600lbs truck with 285 ATs and running 3.73:1 gears.
Soon I'll be sporting 4.56:1 gears!