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1999 - 2003 7.3L Power Stroke Diesel  
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Fuel mileage

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Old Nov 9, 2011 | 10:14 PM
  #1  
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From: Ventura co.
Fuel mileage

When i first got my 7.3 4x4 i could get 16 mpg on the highway, Stock with 140K.
Over time it has dropped to about 12 mpg. about 315 miles per tank @ 25 gal.
I drive between 70 and 80 mph

Well after fixing the leaks on the Hpop, fuel bowl valve and installing the 6637 kit, this was the first time i filled the truck up and got to run a full tank through. I usually use the fuel light when i check my mileage. I know i should not run the truck down that low.
But from light to light is how i have been checking it..
I am up to 15.10 mpg again. 24.5 gal of fuel at 370 miles..

I got my 6637 kit installed and have A.E here now. This week i will get my gauges, then Hopefully next month an exhaust then a DP

cant wait to see if it will go up a little more...
 
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Old Nov 9, 2011 | 11:20 PM
  #2  
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Read this:
https://www.ford-trucks.com/forums/1...-low-mpgs.html
 
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Old Nov 10, 2011 | 08:31 PM
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From: Fleetwood, PA
read what trey said....

...just to have something to go buy -

i have 6" lift, dp, intake, running 315's and i just hand calculated 17.5 mpg
 
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