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Does this mpg sound right?

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Old 01-05-2014, 04:38 PM
jason4636 jason4636 is offline
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Does this mpg sound right?

I have a 2012 F350 4x4 deisel with 3.55 gears. When I first got the truck I was getting around 20mpg. Now the best I can get is 16.6mpg on a 700 mile trip. And when driving back and forth to work I get right at 15mpg. 50 mile round trip, with 90% on the interstate at 75mph. I think the mpg should be higher. One of my buddies has the same truck with 4.10 gears. And he is getting right at 19 highway
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Old 01-05-2014, 05:03 PM
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When's the last time you changed your fuel filters, air filter?? Also, mpgs will go down when running winter fuel.

I used to get 19/20 when I was stock, always lower in the winter though
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Old 01-05-2014, 05:54 PM
jason4636 jason4636 is offline
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Truck only has 19k miles on it. Changed out Air and fuel filters at 12k miles. So the air an fuel filters only have 7k miles on them
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Old 01-05-2014, 05:59 PM
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Are you in a colder climate? I know winter and winter fuel hurts my mpg
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Old 01-05-2014, 06:03 PM
jason4636 jason4636 is offline
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Southern Oklahoma, right next to Texas. I use the fuel system conditioner an cleaner every other tank. I use the same stuff, an treatments. That my buddies do with with their trucks. I just don't know why they are getting a lot better gas milage than I am. When they have lower gears
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Old 01-07-2014, 09:50 AM
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I noticed recently that my MPG has dropped not that its cold here in NC.
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Old 01-07-2014, 11:01 AM
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Have your driving habits always been the same? The reason I ask this is, my best fuel mileage comes between 60 and 65 MPH with the truck unloaded. With my 7.3, I can get up to 23 if I keep it in that range. However, if I push it to 70/75, I will only get in the teens. If I am towing my fifth wheel, well, all bets are off.
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