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MPG drop

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Old Oct 31, 2008 | 09:43 AM
  #1  
QUINCE's Avatar
QUINCE
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Mountain Pass
15 Year Member
Joined: Apr 2007
Posts: 106
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From: NE Ohio
MPG drop

F350 2007 manual transmission. Last year I was getting 17 MPG. Now at 20000 miles I get about 13MPG empty, 9 or 10MPG with a 14-15000lb trailer. I take it easy, shift before 2000RPM by the book. My trips are mostly 25 miles one way. Changed the oil every 5000mi, air filter clean, no water in the fuel system, never left the gas tank go below half. Is this MPG normal? Could it be a problem with the programming? I am inclined to buy an SCT from Innovative Diesel or to try that Eefuel that’s supposed to completely burn the fuel. I’ll appreciate any advice / suggestions.
Thanks
 
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Old Oct 31, 2008 | 12:07 PM
  #2  
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duffman77
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Joined: Apr 2006
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From: Edmonton, AB
Yes something is wrong. Maybe the brakes are dragging, the e-brake on mine does when it gets cold out. I assume there were no codes, have you had any work done lately?
 
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Old Oct 31, 2008 | 12:41 PM
  #3  
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QUINCE
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Mountain Pass
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From: NE Ohio
On the truck, no. However, I was haulling crushed concrete (14-15000 lb) about 25-30 times over 2 months. I stopped doing that 2 weeks now and my MPG is still at about 13. What MPG do you get?
 
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Old Oct 31, 2008 | 04:56 PM
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Simoncx
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Not sure if anything is wrong but I get around 11-12mpg on mine but it has a about 1k in the bed almost always and is towing 4-6k stop and go most of the time. On the highwat empty it's alot better, seems like the stop and go kills the mpg.
 
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Old Oct 31, 2008 | 06:11 PM
  #5  
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duffman77
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From: Edmonton, AB
Quince, I keep all my fuel records on a spreadsheet in a tech gallery. Mine is a 2007 F350 Reg Cab 2WD six speed. So other than cab config and 4x4 we have the same truck.
 
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