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I just drove my '08 F-550 from Denver CO to Helena MT. (800 miles) My fuel consumption computer (in dash) gave me an average 8.4 MPG. There was a significant headwind most of the way. I was traveling on cruise at 70 mph most of the way (never over 75). I kinda wish I was getting the 12 MPGS some of you are complaining about, but "oh well" it is a truck!
I just drove my '08 F-550 from Denver CO to Helena MT. (800 miles) My fuel consumption computer (in dash) gave me an average 8.4 MPG. There was a significant headwind most of the way. I was traveling on cruise at 70 mph most of the way (never over 75). I kinda wish I was getting the 12 MPGS some of you are complaining about, but "oh well" it is a truck!
I get 11.5mpg with my F-450 and the lie-o-meter says 9.2mpg, but "oh well" it's big rig oh i mean truck lol.
with that milage I would think he has 4.88's. my 450 at 70mph runs 2250 rpms and averages 12. my round town and rural milage is now 13.4 hand cal. with 4.30s. Towing 16650# this summer for over 2000 miles was 8.76 hand calculated.
Last edited by firehawk198; Dec 5, 2007 at 11:45 AM.
Reason: spelling