I've got a few!!!
ford f350 dump (gas) 460 engine carburated 8-10 mpg if I'm lucky!!!
ford f350 dump (gas) 460 engine injected 9-10 mpg
full size Chevy blazer 350 throttle body 9-10 mpg
f8000 (BIG) dump !!! Cat 3208 not sure on the mpg, but will idle on very little diesel all day and night!!!
2003 parker with 250 Yamaha 4stroke about 7-8 gph!
Wifes mini van, about 19-21 mpg
I just sold my Toyota 4cyl 4wheel drive pick up that drove about a week and a half on a tank full of gas
I'm looking for a newer Toyota now, maybe a 4runner
and getting rid of the Blazer VERY soon!!!