'2017 F250 Superduty poor MPG - Page 2 - Diesel Forum - TheDieselStop.com
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post #16 of 35 (permalink) Old 07-31-2017, 10:52 AM
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Originally Posted by Kevin Godfrey View Post
I've been 15-17 in mine, but that includes a lot of local driving and stop and go on Houston's parking lots...err freeways. Heading on a 1800 mile round trip roadie in a couple of weeks, curious to see where I land on a long haul at 75 on cruise control.
I drive in Houston's stop and go freeways, 84 miles round trip to work everyday. to an from work I get I get 17.3 to 18.1 and what I head to my lease I can hit 19 I have 7500 miles on it. Now i have had times just around the house quick trips here and there I do drop around 15. I do run opti-lube and arck oil not sure if they help. have gotten good mpf from day 1.

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post #17 of 35 (permalink) Old 08-02-2017, 12:40 PM
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Im all for better mileage, but 80mph and 20mpg is bull****.

Ill pay for the gas, and if you can get almost 1000 miles (960 on the 48gal tank and 680 on the 34 gal) before needing fuel again at 80 mph, Ill buy you two more tanks.

Im in Houston. Headed to El Paso next weekend, you can tag along.

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post #18 of 35 (permalink) Old 08-03-2017, 11:52 AM
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Im all for better mileage, but 80mph and 20mpg is bull****.

Ill pay for the gas, and if you can get almost 1000 miles (960 on the 48gal tank and 680 on the 34 gal) before needing fuel again at 80 mph, Ill buy you two more tanks.

Im in Houston. Headed to El Paso next weekend, you can tag along.
I have to agree, I drive 80 a lot and I notice that after 65 MPG tanks pretty quick. I drive between 60 and 80 mph on my work commute 84 miles round trip and see around hight 16's to 17.1, 18 if I keep foot out of pedal. Open road long stretch I have hit 19 and that is speeds 70 to 80. I have not done a hand calculation yet but have not seen anything over 589 miles for a tank I have a 34 gal.
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post #19 of 35 (permalink) Old 09-21-2017, 11:37 AM
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I think some people expectations are a bit high. These are work trucks. I'm actually impressed that the fuel mileage is as good as it is in most cases. There are full size luxury cars with fuel mileage not much better. I'm a firm believer that fuel economy depends mostly on driving habits. Of course there are other factors such as quality of fuel, altitude, topography and traffic amount others. I've found that 55 to 60 MPH is a good speed to get reasonable fuel economy but an awfully lot of folks seem to always be in a hurry.

My 2017 Super Duty Platinum FX4 gets around 17.3 MPG at 70 MPH and about 18.4 at 58 to 60 MPH.


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post #20 of 35 (permalink) Old 09-22-2017, 02:21 PM
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there's nothing wrong with it. 15 is great for a v8. You should not expect anything more from it. I hear ......i get 20 mpg in my V8 diesel........and higher from some . Pipe dream...... not going to happen in a V8 diesel. I've owned them since 99 and have never ever ever ever beat 15-16 mpg on hwy with 3.73 . 4.10 a little lower. Drive it and enjoy
My '03 7.3L Powerstroke regularly got 20-21 on the highway before ULSD. Since the switch, the best it has done is about 18-19 tops (and the 19 may be generous).

On a long trip to PA and back, I got consecutive tanks of 22.5 and that's no joke.

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post #21 of 35 (permalink) Old 09-23-2017, 12:17 AM
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I can't drive 55......... there's a fuel station on every corner. Just saying

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post #22 of 35 (permalink) Old 09-23-2017, 04:07 PM
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I can't drive 55......... there's a fuel station on every corner. Just saying

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The funny thing is I agree, don't give a s*** about fuel mileage. I put a 55 gal tank in and can go further that I need, that is what counts to me (have not ran low on $ since the service in 1970). I posted facts, some agree and some do not, again I do not give a s***. Look a my past vehicles, number of posts and review my posts. I post and read to learn. I also agree, "Just saying"


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post #23 of 35 (permalink) Old 09-23-2017, 09:45 PM
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The funny thing is I agree, don't give a s*** about fuel mileage. I put a 55 gal tank in and can go further that I need, that is what counts to me (have not ran low on $ since the service in 1970). I posted facts, some agree and some do not, again I do not give a s***. Look a my past vehicles, number of posts and review my posts. I post and read to learn. I also agree, "Just saying"
Yea i had a 90 gallon. Baffle failed so i had a custom 112 gallon made. Just made a 1200 mile trip and got 900 plus miles out of that 112 gallon tank pulling my 40' 5th wheel before the truck gauge began to move. 160 gallon total on board when full. They did a great job.

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post #24 of 35 (permalink) Old 09-28-2017, 12:08 AM
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Yep, people brag about unrealistic mileage in these and other brand trucks. I got 20mpg downhill both ways to and from school

Now if you want to know the mileage ratings of these trucks they do have them they just are not published check out what the ratings are for the Chevy, Ram, and Ford trucks.

https://www.consumerreports.org/pick...-fuel-economy/

My truck has averaged 15.5 over its 51K miles.

-Enjoy
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post #25 of 35 (permalink) Old 09-28-2017, 03:21 PM
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I'd love to get 15 mpg with my F450 but I knew when I got it that I would not -- that said I have seen 17 and 18 pulling my 5th wheel; of course going down hill from Raton Pass (I-25) with a tail wind to boot. Otherwise I plan on 9 to 10 pulling, maybe 13 if no wind solo. If the Kansas wind is blowing, knock a mile or two off of both of those.

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post #26 of 35 (permalink) Old 09-28-2017, 03:36 PM
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I'd love to get 15 mpg with my F450 but I knew when I got it that I would not -- that said I have seen 17 and 18 pulling my 5th wheel; of course going down hill from Raton Pass (I-25) with a tail wind to boot. Otherwise I plan on 9 to 10 pulling, maybe 13 if no wind solo. If the Kansas wind is blowing, knock a mile or two off of both of those.
Yep, I feel 15.5mpg is excellent, my old explorer sport trac didn't do that good. I keep a running lifetime total for the truck, it is a F350 SRW CC longbed, and that is also with about 6000 miles of towing a 30ft bumper pull RV trailer, I haven't yet pulled the trigger on the 5th wheel yet. With the 30ft trailer I averaged around 10-12mpg depending on wind speed.
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post #27 of 35 (permalink) Old 10-06-2017, 07:21 AM
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Pretty new, see milage in photo. Out driving around, putting 1000 miles on before hooking up trailer. Pleased with stop/go town mileage. Haven't stomped on the throttle yet, max speed in rural area has been 65mph.
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post #28 of 35 (permalink) Old 10-06-2017, 09:43 AM
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8mpg towing 17000lbs doing 78mph and smiling the whole time with the cruise on.....

I didn't buy a Prius.

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post #29 of 35 (permalink) Old 10-07-2017, 12:13 PM
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8mpg towing 17000lbs doing 78mph and smiling the whole time with the cruise on.....

I didn't buy a Prius.
LOL!!!!! I'm with ya. I've always said...... they's a fuel station on every corner........ Wheel in and filler up!!! Get back in and hammer down!

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post #30 of 35 (permalink) Old 10-19-2017, 08:50 PM
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My son bought a 2017 6.7 F250 and experienced the SAME mileage drop around 10,000 miles. He was getting 21-22, then drove it home to AZ from his base and it dropped to 12-14. He is REALLY pissed.

I had a customer last week also tell me he had a BIG drop in mileage in his 2017 6.7 - no explanation.

So I THINK this is going to become a popular complaint and I hope it gets explained soon.
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