I drove my "new" 2005 Tundra 4.7L SR5 double cab home last week and got 23 MPG on the 170 mile trip.....then I refilled after about 400 more miles and got only 16.5. Boohoo!
I was driving 75-80 mph using mostly cruise control when I got the 23....so maybe I'm onto something....raise the speed limits from 55 to 75 around here.
