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Old 06-29-2016, 08:44 PM   #81
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Not 22mpg but close in my 2015 Ford F 350 crossing Ohio with 4 souls on board.

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I need to figure out what I am doing wrong. My 2015 F350 4x4 has never seen over 17 mpg running empty on the interstate (cruise @ 70) and I typically get 9.5 - 10 mpg towing less than 9,500 lbs. @ 65 on the interstate and 12 mpg @ 55 on secondary roads. I currently have over 12,000 miles with about half of that towing my TT and have logged every drop of fuel put in it. My 95 7.3 F350 2WD EXT cab would get 22 empty and 20 towing an 8,000 lb cabin cruiser and the 97 7.3 4x4 CC I still have since new gets about 20/18.

I have no complaints about the power, ride or handling but for me the fuel mileage is just not there.

AL
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Old 06-29-2016, 08:54 PM   #82
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For one thing you are towing a sail/ brick down the interstate ...... almost no aerodynamics with a travel trailer....... being a 4x4 is another



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Old 06-29-2016, 08:54 PM   #83
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Al what rear end do you have in that Ford?
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Old 06-29-2016, 09:03 PM   #84
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3.31 gears, which is one reason I think I should get a little better running empty. It has 18" wheels and that combination is equivalent to 3.55 gears with 20" wheels. I did all of the calculations on that before I purchased it. Especially coming from 4.10 gears in my 95 and 97.

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Old 06-29-2016, 09:09 PM   #85
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3.31 gears, which is one reason I think I should get a little better running empty. It has 18" wheels and that combination is equivalent to 3.55 gears with 20" wheels. I did all of the calculations on that before I purchased it. Especially coming from 4.10 gears in my 95 and 97.

AL
I got 3.55s in my 2016 F350 dually 4x4. I can get 20-21 cruising at 60-70 if I'm nice to it.
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Old 06-29-2016, 09:09 PM   #86
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That surprises me too Al. I would think you should get a little more. I have a friend pulling a Landmark 42' with a 2016 1 ton GMC club cap getting 20 empty 13 pulling. He is very heavy with that Landmark.
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Old 06-29-2016, 09:45 PM   #87
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I need to figure out what I am doing wrong. My 2015 F350 4x4 has never seen over 17 mpg running empty on the interstate (cruise @ 70) and I typically get 9.5 - 10 mpg towing less than 9,500 lbs. @ 65 on the interstate and 12 mpg @ 55 on secondary roads. I currently have over 12,000 miles with about half of that towing my TT and have logged every drop of fuel put in it. My 95 7.3 F350 2WD EXT cab would get 22 empty and 20 towing an 8,000 lb cabin cruiser and the 97 7.3 4x4 CC I still have since new gets about 20/18.



I have no complaints about the power, ride or handling but for me the fuel mileage is just not there.



AL


I'm right there with you. 15 mpg around town, 17 best case on the highway, and 10 when towing 8800 lb TT. I wish I could get what others are claiming.
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Old 06-29-2016, 09:47 PM   #88
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I should say that I have never checked his math. That's what he claims. Never a reason to doubt him.
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Old 06-29-2016, 10:11 PM   #89
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I'm right there with you. 15 mpg around town, 17 best case on the highway, and 10 when towing 8800 lb TT. I wish I could get what others are claiming.
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It looks like we are pretty close on everything. Based on my experience with my older F350s, I was expecting/hoping for somewhat better mileage than I am getting. I have talked with 2011-2014 Ford PSD owners that are getting much better mileage and I attributed some of the decrease in my 15 to Ford adding more fuel to the tune to get increased hp and torque numbers, but now I am seeing quite a few 15s and 16s getting good numbers. I am at a loss as to why.

AL
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Old 06-29-2016, 10:24 PM   #90
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I typically get 15-17. 20+ comes with perfect conditions. Also very flat where I live. I get 11ish while towing, so that seems to be inline with others.
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