Originally Posted by badash5575
The best I have gotten is 24.3 MPG on a 90 mile round trip... all highway, 70-75 mph average... seems the truck gets better gas mileage the faster you go.
This spring I am going to take a trip to vegas, so that will be a 550 mile trip, and am curious to see what the mileage will be.
Interesting comment as I have often wondered since buying my truck where the ultimate cruising speed for fuel economy is? Most comment on z forum seem drive about the 67, 68 mph for fuel economy.