Mileage
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Senior User
Joined: Jan 2010
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Mileage
I have a 2004 F-250 Crew Cab Short bed with the 6.0. According to Ford the Gear ratio is 3.73.
Changed the oil and filters, air filter, both fuel filter and the CAC hoses (blue ones)
Also did all the brakes this weekend
The overhead console computer says I am getting around 10.5 miles a gallon.
I do have the latest flash installed, did this a week ago, and they checked the injectors and what not. Everything appeared fine. I do know that my y pipe has a crack in it (can hear the whistling and smell the exhaust (next Saturday's project). On cold morning's it is still a bit rough (30 degrees), but once it is warm you can't even feel it idle.
Should I be getting better mileage and if so, what is causing this low mileage? Most of my driving is short distance, but even when we take it for a day trip on the highway it hover around there.
Changed the oil and filters, air filter, both fuel filter and the CAC hoses (blue ones)
Also did all the brakes this weekend
The overhead console computer says I am getting around 10.5 miles a gallon.
I do have the latest flash installed, did this a week ago, and they checked the injectors and what not. Everything appeared fine. I do know that my y pipe has a crack in it (can hear the whistling and smell the exhaust (next Saturday's project). On cold morning's it is still a bit rough (30 degrees), but once it is warm you can't even feel it idle.
Should I be getting better mileage and if so, what is causing this low mileage? Most of my driving is short distance, but even when we take it for a day trip on the highway it hover around there.
Lead Driver
Joined: Jun 2007
Posts: 6,757
Likes: 5
From: Corvallis, OR
You need to hand calculate over a few tanks, don't trust the overhead lie-o-meter. Also, do you have stock tires or larger? With a 4" lift and 35s I get 11.5mpg in town and 16.5mpg on the highway running 65mph.
Post Fiend
Joined: Nov 2007
Posts: 9,944
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From: Somewhere In FTE Land
I'm actually getting better with that same set up, 14-15 city and 19-22 hwy
Lead Driver
Joined: Jun 2007
Posts: 6,757
Likes: 5
From: Corvallis, OR
285 what? 285/75/16? 285/75/18? There's lots of 285s. Anyway, your best bet would be to hand calculate your mileage over a few tanks and scale it for your larger tires.
So, say 100 gallons, 1500 miles (from odometer), 285/75/16 tires (3.7% larger than stock):
(1500 miles)/(100 gallons)= 15mpg
(15mpg) x (1.037)= 15.55mpg
So, say 100 gallons, 1500 miles (from odometer), 285/75/16 tires (3.7% larger than stock):
(1500 miles)/(100 gallons)= 15mpg
(15mpg) x (1.037)= 15.55mpg
Senior User
Joined: Jan 2010
Posts: 196
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mine is a 04' super duty and i too get 16 on the highway. i dont think there is much more available for the 6.0
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Senior User
Joined: Jan 2010
Posts: 196
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agreed but maybe he can share how it is accomplished. what year is your truck that gets that kind of mileage?
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