Quote Originally Posted by freshturk View Post
ive had my '13 fx4, quad cab, 5.5ft bed, 3.7 since april and I havnt seen anything close to the mileage you're getting. When it was stock i would average mid-15s on mixed highway/city and never really saw much of an improvement on solely highway. Now with the level and 33s, the computer tells me 13.5-14.1 mixed without the chip being reflashed to accomodate the larger tire size so in reality its prolly 0.5mpg better. Towing from Ohio to NC through the hills of WV, i averaged 10.5 with the bigger tires. Overall like everyone else has said, it tows about as good as it gets for a gasser, but unfortunately i have not seen the mpg that others have posted. I drive like a grandma too.
I hear ya man, unfortunatly like you say, MPG is relative to area, and driving conditions. I do drive it pretty easy most of the time. I rarely go over 2K rpm and the stretch i drive to work is 55 and relativly flat. I have 20 miles 55 with 2 slow down to 30 sections for 1/2 mile. Then 8 miles city 30-45 mph area, lots of traffic lights but they are timed so I eighter hit none, or 1.

I really haven't had her up on the Highway 60+ yet. I have 1700 miles now.

I did see a slight drop .3-.5mpg drop when i lifted the front but I am still running the 18 all terrain tires. I would expect a drop when I upgrade to 33BF or Toyo Country's once these are worn out.

I am seeing a 2mpg increase across the board compared to the F350. Nice gain and with the price difference in Diesel to Unleaded here I'm saving about 20 bucks a tank plus gaining 100 miles per tank.