Best Powerstroke
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Senior User
Joined: Dec 2011
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Best Powerstroke
I've been searching for the best MPG's for a tuned Stroke. I've seen 6.0's to be piles when not given major TLC (resale says a lot on it) I'm a fan of the 7.3 and worked with a dude who got close to 30mpgs out of his (tuned and summer hwy run)
How about the 6.4 and 6.7 whats tops?
(please spare me the 'if you want mpgs get a ranger' plenty sharp diesel guys are getting some good runs out of superdutys)
How about the 6.4 and 6.7 whats tops?
(please spare me the 'if you want mpgs get a ranger' plenty sharp diesel guys are getting some good runs out of superdutys)
FTE Leadership Emeritus
Joined: Sep 2000
Posts: 23,174
Likes: 1,678
From: Stephensville WI
Hello wastingas and welcome to FTE.
I would fly the BS flag
for anyone who claimed to get close to 30 MPG out of one of these trucks. They are HEAVY and the aerodynamics suck.
But, if your goal is MPGs, then start with a 7.3L. A 6.0L or even a 6.4L can give you good fuel mileage, with the right modifications, but anything approaching 20 MPG should be considered a miracle.
I would fly the BS flag
for anyone who claimed to get close to 30 MPG out of one of these trucks. They are HEAVY and the aerodynamics suck. But, if your goal is MPGs, then start with a 7.3L. A 6.0L or even a 6.4L can give you good fuel mileage, with the right modifications, but anything approaching 20 MPG should be considered a miracle.
Posting Guru
Joined: Sep 2009
Posts: 2,015
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From: Lakehills, TX
For reference, I averaged about 19mpg cruising on the flat highway and empty in my '07 6.0L, though driving through traffic to work and back would get 10 to 12. All stock. My current '11 6.7L gets about 15.5mpg consistently or on the highway hits 20, again all stock. When I drove it back from the dealership in Austin I got about 21.5mpg but that was really being gentle. Now that the engine has started to break in, it's starting to get a little better mileage, but I think it's going to be hard to top a 6.7L stock for the combo of power and mileage. Both these trucks were F250 crew cab short bed FX4 Lariats. The 6.0L chipped for "economy" can do fairly well, but I'd be willing to bet the 7.3L is probably going to be closest assuming the engine and systems are still in good shape.
Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 27
From: Mesa AZ
I've been searching for the best MPG's for a tuned Stroke. I've seen 6.0's to be piles when not given major TLC (resale says a lot on it) I'm a fan of the 7.3 and worked with a dude who got close to 30mpgs out of his (tuned and summer hwy run)
How about the 6.4 and 6.7 whats tops?
(please spare me the 'if you want mpgs get a ranger' plenty sharp diesel guys are getting some good runs out of superdutys)
How about the 6.4 and 6.7 whats tops?
(please spare me the 'if you want mpgs get a ranger' plenty sharp diesel guys are getting some good runs out of superdutys)
The most fuel efficient Power Stroke in our fleet is the 4.5 liter V6. I don't have the actual figures handy but those things go forever on a tank of fuel. Kinda amazing actually since they aren't the most aerodynamic things on the road...
Postmaster
Joined: Apr 2008
Posts: 4,724
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From: Rogersville, TN
The 97 OBS listed in my sig is a bare bones, xl, no upgrades at all, etc, and the best mpg's I have gotten out of it was 23 mpg's running at 55 mph for 500 miles straight on flat ground. I usually get about 19 mpg's though. I don't see getting 30 out of one either.
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
I disagree. My 6.7L truck was capable of 20 MPGs on paper, and there are lots of folks down in the 6.7L forum with 3.31 gears doing even better than that.
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Senior User
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Lots of input, as far as BS on the play i suppose its possable. I'm new to the super duty world but i've played if 1/4mile cars a lot. One thing I've accomplised through fine tuned turbos and stand alone fuel managment systems is outstanding mpgs when you want them and super fast et times when you want it.
I dont understand. Is it not possable to put a boost controler on the SD? possably free up the intake and exhaust?
Never say never folks!
I dont understand. Is it not possable to put a boost controler on the SD? possably free up the intake and exhaust?
Never say never folks!
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Tuned
Joined: Jun 2008
Posts: 253
Likes: 4
I had a lifted dually 6L, one tank, and only one tank, with an sct on extreme i got 18.9 mpg. best I ever saw. My grandpa has a 97 and 02 7.3 and sees consistent 12-14. My cousin has a 6.4 and gets 10 +/- based on his need for speed. His and my grandpas trucks are all stock, all f250 ccsb 4x4. mine was a sclb drw 4x4. I think they all are capable of the 16-18 consistently when built properly. Dont expect over 20. Thats my opinion. But the mpg debate is endless and theres more bs than truth out there... I think it comes down to whether you want loud or quiet motor, old or new style, and how much you want to pay to fix it or work on it yourself. get whatever suits your needs, and reasonable mpgs will follow in time
Thread Starter
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Senior User
Joined: Dec 2011
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I had a lifted dually 6L, one tank, and only one tank, with an sct on extreme i got 18.9 mpg. best I ever saw. My grandpa has a 97 and 02 7.3 and sees consistent 12-14. My cousin has a 6.4 and gets 10 +/- based on his need for speed. His and my grandpas trucks are all stock, all f250 ccsb 4x4. mine was a sclb drw 4x4. I think they all are capable of the 16-18 consistently when built properly. Dont expect over 20. Thats my opinion. But the mpg debate is endless and theres more bs than truth out there... I think it comes down to whether you want loud or quiet motor, old or new style, and how much you want to pay to fix it or work on it yourself. get whatever suits your needs, and reasonable mpgs will follow in time
4wd Low
Joined: Oct 2012
Posts: 13
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I get 15.2 with a mix of city and highway on my 03' 6.0L I just got
I was so happy I nearly busted when I calculated that number last week. I have not yet taken a full road trip but I am expecting 18-19mpg which seems to be about as good as it will ever get for any 1 ton diesel.
I was so happy I nearly busted when I calculated that number last week. I have not yet taken a full road trip but I am expecting 18-19mpg which seems to be about as good as it will ever get for any 1 ton diesel.
Freshman User
Joined: Nov 2012
Posts: 29
Likes: 0
From: Boise
Modifications can improve both power and mpg's, but don't expect to see much. I did a ton of research as mpg's were a huge concern when buying my truck. I've heard of some Cummins getting mid 20's, but that's after a TON of work and a lot of money put into them.
Postmaster
Joined: Nov 2006
Posts: 4,517
Likes: 3
From: SE Wyoming
Actually you totally agree, must have missed the word UNTIL the 6.7L.
