TomG2 wrote:
The F-150 mileages quoted seem about right. My Silverado 1500 would top out at slightly over 30 mpg at a steady 55 mph and plunge to the low teens when towing. Computers are good for computing fuel mileage as well as posting (Mis)information.
I don't need any misinformation about GM 5.3's... I've owned 3 of them over the years. The last was an 08 GMC. It got slightly worse mileage than my eco, even though it was 600 lb lighter, car mirrors, several inches shorter and couldn't handle a trailer.
The computer on the eco is always within 3% while the GM's were always optimistic by up to 8%.
I also never saw 30mpg with a 4x4 5.3, even at 45mph. The eco has a better chance at that.
