mpg - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 13 (permalink) Old 04-05-2009, 03:17 AM Thread Starter
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mpg

I drove 1100 miles to OK. 250 tune on the way down, 70 to 79mph. averaged about 15, 210 tune on the way home,maybe 15.5 avg.truck has 3.55 rear end, stock tires, anything going to get me better mileage,I want to hear it, thanks
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post #2 of 13 (permalink) Old 04-05-2009, 03:59 AM
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post #3 of 13 (permalink) Old 04-05-2009, 04:06 AM Thread Starter
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mpg

it is a F250 CC SB. 3.55 stock 18" tires, tonneau cover.4X4. dpf delete. S&B CAI, would it help to delete the DOC?
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post #4 of 13 (permalink) Old 04-05-2009, 11:23 PM
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gear set

With the diesel option I thought that they only offered 3:73/4:10/4:30 gear set. 5.4 and the 6.8 have 3:55 gears. As for my cat. when I did the DPF delete I hallowed it out.
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post #5 of 13 (permalink) Old 04-06-2009, 12:53 AM
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With the diesel option I thought that they only offered 3:73/4:10/4:30 gear set. 5.4 and the 6.8 have 3:55 gears. As for my cat. when I did the DPF delete I hallowed it out.
Late 2008 models and the 2009 models can be bought with the 3.55 ratio. I have the 3.55's in my 2008 F250 Lariat 4x4 CrewCab Shortbed (built 5/08) and am getting 18.2 mpg with the Spartan 210 Tune + DPF/CAT delete at 72mph and have less than 3,000 miles on my truck. I'd expect to see around 20 mpg on the highway once the truck gets around 8,000 to 10.000 miles on it.

My experience with all of the diesel trucks that I have owned (Ford, Chevy and Dodge) is that once you get above 2,000 rpms, the mileage begins to suffer. I wouldn't expect much more than 16 mpg if I were running near 80 mph.
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post #6 of 13 (permalink) Old 04-06-2009, 01:04 AM
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i got a 08 3.73 6 speed and i run 275 every day towing and not and i got 709 miles outa my last tank all highway to nj and back to mass. and i was running it hard 85 90 the hole way this truck never comes outta 6th gear on the interstate i love it just my .oo2




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post #7 of 13 (permalink) Old 04-06-2009, 05:13 AM Thread Starter
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Originally Posted by Truckmaniac View Post
Late 2008 models and the 2009 models can be bought with the 3.55 ratio. I have the 3.55's in my 2008 F250 Lariat 4x4 CrewCab Shortbed (built 5/08) and am getting 18.2 mpg with the Spartan 210 Tune + DPF/CAT delete at 72mph and have less than 3,000 miles on my truck. I'd expect to see around 20 mpg on the highway once the truck gets around 8,000 to 10.000 miles on it.

My experience with all of the diesel trucks that I have owned (Ford, Chevy and Dodge) is that once you get above 2,000 rpms, the mileage begins to suffer. I wouldn't expect much more than 16 mpg if I were running near 80 mph.
Is this hand calculated too, thanks
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post #8 of 13 (permalink) Old 04-07-2009, 10:57 PM
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Hand cal. mine with the 275 tune and I got 23.78 US mpg, which is about 27.9 Eng mpg or 10.1 L/100. This is highway driving. So looking at my dash on the highway its pretty close. Dash reads 28.2 and I am getting 27.9
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post #9 of 13 (permalink) Old 04-07-2009, 11:46 PM
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Mpg

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Is this hand calculated too, thanks
Yes, it is hand calculated. The driver information center showed 19.5 mpg.
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post #10 of 13 (permalink) Old 04-08-2009, 03:35 AM
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Originally Posted by fastfords View Post
Hand cal. mine with the 275 tune and I got 23.78 US mpg, which is about 27.9 Eng mpg or 10.1 L/100. This is highway driving. So looking at my dash on the highway its pretty close. Dash reads 28.2 and I am getting 27.9

Is it all down hill where you live?? How many miles are you going on how many gallons??

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