Fuel mileage help

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May 12, 2009 | 10:22 PM

#16

Greg W.

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Joined: Mar 2009

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From: Parkersburg

If I can get 15 MPG I'd be happy. When I bought the truck it was bone stock and I was not impressed with the performance at all. I have read here on the FTE site that Ford put a new flash in the FICM and looking at the oasis report mine was just replaced before I purchased the truck and was wondering if that was part of the problem.

May 13, 2009 | 02:05 AM

#17

cj50

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From: Edmond, OK

I don't know how all of you guys are getting 15-20 mpg. Mine gets 11-13, just like one of the other guys stated and it's a F-250 4x4 automatic.

May 13, 2009 | 06:30 AM

#18

zhilton

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From: Claremore, OK

Quote:

Originally Posted by cj50

I don't know how all of you guys are getting 15-20 mpg. Mine gets 11-13, just like one of the other guys stated and it's a F-250 4x4 automatic.

Those of us getting "high mileage" are usually 2WD and only have 4 OEM sized tires on the pavement. Yeah, it's great to have 4X4 and big tires when it comes to crappy weather and/or roads, but your going to pay dearly for it at the pump. I regularly run in the 17-20 mpg area...just depends how much is on the interstate and how much is in town. I know the key with my 3.73 pumpkin is to keep the diesel mill right around 2k rpm which is 70-72 mph. I can run 75 mph and get 18-19 mpg, but above that the mileage starts to drop quickly. The last two tanks I've run Diesel Kleen (gray bottle) in the tank, the mileage did go up about a mile to the gallon. The pavement princess rides on four Micheln X Raidal LT265/75/R16E pumped up to 55 psi; had Perilli Scorpions (KTP tires, same size & pressure) on their before that...no noticealbe change in mileage with either brand.

May 13, 2009 | 06:35 AM

#19

tex25025

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From: Plano TX and Brentwood TN

Quote:

Originally Posted by zhilton

Those of us getting "high mileage" are usually 2WD and only have 4 OEM sized tires on the pavement.

Gearing also plays a part in that as well. A DRW with 4.10s or if your able to get it done 3.73s will get pretty good mileage then one like mine with 4.30s gears on the interstate unless I'm running 60-65. Which I do when I'm hauling the horse trailer, but then I've got the trailer boggin me down. No win situation, however, just imagine if you had the same setup with a 5.4 or 6.8, wouldn't be good at all.