6.0L MPG?
Logistics Pro
Joined: Mar 2007
Posts: 4,604
Likes: 4
From: Claremore, OK
First off, welcome to FTE and the 6.0L forum.That's a loaded question. A 2WD truck will get better mileage overall than a 4WD; a stock height truck will do better than a lifted one; and how fast you drive is another factor. With all that said, I'm running a 19.3 mpg average over 110 fill-ups covering 48k miles.
Pavement Princess (Ford F-250 Super Duty) | Fuelly
I'm one of the slower drivers out there...seldom run faster than 70 mph; slow roll up to/from stop signs/lights; don't beleive in "rolling coal" and always keep up with my PM's. I think in a couple of hours you'll discover this a "can of worms" type of topic.
Pavement Princess (Ford F-250 Super Duty) | Fuelly
I'm one of the slower drivers out there...seldom run faster than 70 mph; slow roll up to/from stop signs/lights; don't beleive in "rolling coal" and always keep up with my PM's. I think in a couple of hours you'll discover this a "can of worms" type of topic.
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New User
Joined: Nov 2011
Posts: 16
Likes: 0
From: Logan, Ohio
Appreciate the reply and yes this can turn into that type of topic. I hope it does not. I am just looking for a basic answer as in "2005 4x4 whatever programmer this size tire averaging 18-20mpg"
Logistics Pro
Joined: Mar 2007
Posts: 4,604
Likes: 4
From: Claremore, OK
I doubt you'll see a 4WD truck get 20 mpg without keeping the speed below 60mph. There is too much drag in the front axle/transfer case. The type of tire & air pressure your running will also effect the efficiency of the truck. Running street radials at 60+ psi will do better than all terrain at 45-50 psi...that is what I'm doing Michelins street radials at 60psi.
Cargo Master
Joined: Oct 2008
Posts: 2,308
Likes: 1
From: Elyria, OH
my 06 4x4 mostly stock with stock sized tires and 4" straight exhaust i get about 11 city/ 15 highway. Towed my mud truck last week up to michigan and back, i got 12 mpg. Thats with nearly 10K behind me @ 70 mph!
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Senior User
Joined: Nov 2010
Posts: 419
Likes: 1
From: Iowa
2005 crew cab, long box, 4x4, Stock tires (75psi -tires rated up to 85psi), 4" straight pipe, tonnue cover, egr delete, BullyDog GT set on performance, air raid air filter in stock box
daily driving in town 13-15 mpg
highway 18-20 mpg (70-80mph)
stock I got 16.5 highway and 13 city
daily driving in town 13-15 mpg
highway 18-20 mpg (70-80mph)
stock I got 16.5 highway and 13 city
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Tuned
Joined: Jul 2007
Posts: 363
Likes: 4
I am absolutely stock and average about 13 to 15 around town typically. My wife and I recently drove it on a 3300 mile trip (from San Diego area thru Oregon and Washington, east into Idaho, then south back to San Diego area), where I carefully calculated the milage every tank. Before we left I changed the oil (Shell Rotella T), had the transmission fluid changed, changed both fuel filters, and made sure the tires had 50 psi in the front and 55 psi in the rear (tires are stock size BF goodrich). We also ran Stanadyne in every tank. Gas milage (calculated) ran 18.5 mpg to 21.5 mpg, with the average for the whole trip at about 19.5. 
Also... I was not "easy" on the gas pedal, and in a few spots, I really wasn't easy on it!! By the way, and interesting to me, was the fact that the "gas milage meter" above the windshield consistently read about 0.5 mpg above actual (calculated).
Also... I was not "easy" on the gas pedal, and in a few spots, I really wasn't easy on it!! By the way, and interesting to me, was the fact that the "gas milage meter" above the windshield consistently read about 0.5 mpg above actual (calculated).
Senior User
Joined: Apr 2009
Posts: 359
Likes: 0
Same truck---Same Milage---Different citys traffic....
Whats funny is I was getting roughly the same average before I upgraded to 285/75/16 Mud Terrains and added a tuner running a performance tune.
No more no less...... As if thats just what its meant to be
Hotshot
Joined: Jul 2005
Posts: 13,834
Likes: 25
From: Middle Tn.
Stock two wheel drive eight ft. bed. 13 to 15 city, 18 to 21 hiway, 14 to 17 mixed. Towing the 31' fifth wheel it gets 11 to 13 depending on hiway and speed. Average 11.6 to the Sierras and 13.2 on return trips. That is all on normal days with no high winds, rain etc. Sierra trips are a 260 plus mile trip each way with no fill ups. When towing I set the cruise at 60 mph where ever possible.
Senior User
Joined: Oct 2010
Posts: 106
Likes: 0
From: Katy, TX
That's pretty much what I have decided too.
Posting Guru
Joined: Aug 2006
Posts: 1,199
Likes: 0
From: High Point, NC
Here's my experience....
In town, back & forth to work, 13 (at best) - but to qualify that, my trip work is only 3 miles (a tank lasts about 1 month)
We just traveled TX to NC & Back - on the way to NC we towed our 7k# TT and got 12, on the return not towing we got 17 the first 1/2 of the trip and 15 the 2nd 1/2 (30 mph head wind).
I also learned a valuable lesson... when towing, never let the tank get below 1/4 and when the low fuel light comes on... it's to f'ing late! Sat on the side of I10 for an hour waiting on roadside assistance
In town, back & forth to work, 13 (at best) - but to qualify that, my trip work is only 3 miles (a tank lasts about 1 month
)We just traveled TX to NC & Back - on the way to NC we towed our 7k# TT and got 12, on the return not towing we got 17 the first 1/2 of the trip and 15 the 2nd 1/2 (30 mph head wind).
I also learned a valuable lesson... when towing, never let the tank get below 1/4 and when the low fuel light comes on... it's to f'ing late! Sat on the side of I10 for an hour waiting on roadside assistance