How to increase fuel mileage? - Ford Powerstroke Diesel Forum
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Old 01-07-2014, 08:28 AM
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Cool How to increase fuel mileage?

I just purchased a 2013 F350 4 door 6.7 and the fuel mileage sucks. My dodge got 21.5 MPGH and my new one only get 15.6 MPGH. Is there any thing i can do to increase this?
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Old 01-07-2014, 08:43 AM
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Over inflate tires by 5%. Strip all unnecessary weight. Increase aerodynamics. Go easy on the right foot. Cruise at 65 instead of 75 down the freeway. Run all synthetic oil, and change it regularly. Don't let it idle if you'll be stopped more than a minute. (same with warm up) Store your truck in a nice warm garage to keep all your fluids warm, they will flow easier and take less idle time for your rig to warm up. Use the best fuel you can find. Use injector cleaner to keep injectors and valves, ect. clean. That's a start......
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Old 01-07-2014, 08:49 AM
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I seriously doubt your Dodge got that kind of mileage consistently unless it was a much older dodge with no emissions. Drive the Ford in same manner as you did the Dodge and you should see as good of fuel mileage.

I've gotten as high as 23 mpg on extended hiway trips at 65 mph. I consistently get 18 to 18.5 mpg on trips at 80 mph.

Around town driving is 14-15 mpg and towing is 10-12 mpg depending on what I am towing.
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Old 01-07-2014, 04:19 PM
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i get 17 on the highway going 80-85 running around south texas just a hair better than my d-max but oh well cant complain 9k truck moving like that.
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Old 01-07-2014, 04:23 PM
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In the winter use a diesel fuel additive with cetane boost (I use diesel kleene). Also, since I imagine you have the 4.10 gears you are going to want to keep it at 65 and under. Just keep it around the 1800 RPM range. When/if they are available get a DPF delete and a programmer. Other then that just don't hot rod the thing.
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Old 01-07-2014, 05:49 PM
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As the engine breaks in your mileage will increase as well my deleted 12 Cummins got 14 average new and once ran in around 20k I could average 19-20 all day my 13 PSD is the same I averaged 13 new and now at 10k I average around 16-17 maintaining 16-1800 while cruising with 331 gears and 20x10s with 35 inch MTs.
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Old 01-07-2014, 06:15 PM
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Quote:
Originally Posted by Painted Horse View Post
I've gotten as high as 23 mpg on extended hiway trips at 65 mph. I consistently get 18 to 18.5 mpg on trips at 80 mph.

Around town driving is 14-15 mpg and towing is 10-12 mpg depending on what I am towing.
I have seen similar numbers as well, in fact I just pulled a uHaul car trailer with a '89 Lincoln Mark VII strapped to it from Ft. Lauderdale to Houston running 70-75 with the CC on and averaged 14 MPG. This actually surprised me!!
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Old 01-08-2014, 04:03 AM
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Thanks for the input but was hoping for a magic cure i guess. By the way Painted Horse my dodge is a 2008 with full emisions and those are actual numbers with 165,000 miles on the OD. I new the Ford wasnt going to be as good but was hoping better than what i am getting.
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Old 01-08-2014, 09:02 AM
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I too get 17-20mpg on the highway depending on speed. My overall avg right now according to the dash is 15.5ish.
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Old 01-08-2014, 09:15 AM
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i'm getting almost the same as painted horse. all my buddies that own dodges with the 6.7 only get 10-11 at best all stock. the ones that are full deleted with tune may get 22 w/ 4wd and 26 on 2wd
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