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6.7 MPG while Towing

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Old Oct 1, 2017 | 06:57 PM
  #1  
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wesd
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6.7 MPG while Towing

What kind of gas mileage can I expect at 65 MPH towing a 6500lb 30' travel trailer?

Truck is a crew cab 4x4 lariat.
 
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Old Oct 1, 2017 | 07:04 PM
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Robb81
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From: Texas
10-11mpg on flat land and no head winds with a 6.7 in a srw.
 
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Old Oct 1, 2017 | 07:36 PM
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GoDuke1
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From: Lincolnton, NC
Similar trailer here, I was getting 13 (best) 11 (worst) but that was at 70mph
 
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Old Oct 1, 2017 | 07:52 PM
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Redrockerstl55
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From: St Louis Suburbs
I have averaged 10.1 towing a 10,000 lb trailer in hilly terrain. Typically drive with cruise set at 68 mph.
 
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Old Oct 1, 2017 | 07:54 PM
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I just towed 300 miles over mostly flat (some slight rolling hills) in my 6.2 and got 8.4 MPG. Truck always had plenty of power.
 
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Old Oct 1, 2017 | 10:18 PM
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Zybane
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Wonder why the diesel is only getting 10-20% better towing MPG. That's a looooooooong time to get some return on that diesel engine.

Yes, I know about better engine braking etc...
 
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Old Oct 1, 2017 | 10:20 PM
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Kevin611
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From: Cleveland
Im getting 9-11 mpg with 16k 39' 5 wheel srw crew cab.
 
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Old Oct 1, 2017 | 11:31 PM
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Spode
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From: Upland
I got 11.0 towing a 9700 lb trailer 9600 miles from California to fairbanks and back. I started the trip with 1800 on the odometer.


I generally drove 60-65 but there were many miles at 30-40 on the Alaskan hwy and some 70 mph highway miles.
The picture below is the overall trip. driveway to driveway

Final number from 2017 Alaska trip
 
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Old Oct 2, 2017 | 08:31 AM
  #9  
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wesd
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What would be the range on the 6.7 towing with a full tank?

Got to admit, I was a little disappointed to only get 8.4 on flat ground. The power was great, even passed a slow moving truck on a 2-lane, and was able to out-accelerate a Toyota Rav 4 that was trying to pass me and the truck in front of me. Got a middle finger salute for that one.

If I can jump up 20% in MPG and a better towing range will move up to the 6.7 when I find a deal.
 
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Old Oct 2, 2017 | 08:38 AM
  #10  
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ZAR2USA
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Originally Posted by Zybane
Wonder why the diesel is only getting 10-20% better towing MPG. That's a looooooooong time to get some return on that diesel engine.

Yes, I know about better engine braking etc...
You are forgetting tow capacity which the gas trucks can't touch. That is the primary reason for purchasing. Fuel consumption is the very last factor.
 
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Old Oct 2, 2017 | 08:55 AM
  #11  
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Redrockerstl55
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From: St Louis Suburbs
Originally Posted by Zybane
Wonder why the diesel is only getting 10-20% better towing MPG. That's a looooooooong time to get some return on that diesel engine.

Yes, I know about better engine braking etc...
From what I can tell, gathering data from not just this thread but many others, is the 6.7 gets about 3 MPG better than the gasser.

So the break even with that advantage and using $3.00 diesel (Diesel is cheaper than 87 octane where I live...$2.39 is what I paid this weekend...I know it's higher is other areas of the country).

My rough math estimate puts the break even at around 125-135,000 miles for the PSD upgrade.

This doesn't take into consideration any repairs (you get a much longer warranty with the PSD) or the cost of maintenance. What you do get is higher capacity, easier towing, less work or shifting for the transmission and other benefits that are maybe more subjective.

If you are going to lease it for 3 years and trade it in and you are not towing to capacity then the gasser might be better for many people. If you are owning for the long haul and towing heavier loads then maybe the oil burner is the way to go.
 
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Old Oct 2, 2017 | 09:03 AM
  #12  
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wesd
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This thread is providing the kind of real-world data I look to help my decision.

I know it's probably not going to pencil out for what I need but owning a large travel trailer doesn't pencil out either, or getting married, etc. (LOL).
 
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Old Oct 2, 2017 | 09:51 AM
  #13  
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j759ll
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From: White Oak
Originally Posted by Redrockerstl55
From what I can tell, gathering data from not just this thread but many others, is the 6.7 gets about 3 MPG better than the gasser.

So the break even with that advantage and using $3.00 diesel (Diesel is cheaper than 87 octane where I live...$2.39 is what I paid this weekend...I know it's higher is other areas of the country).

My rough math estimate puts the break even at around 125-135,000 miles for the PSD upgrade.

This doesn't take into consideration any repairs (you get a much longer warranty with the PSD) or the cost of maintenance. What you do get is higher capacity, easier towing, less work or shifting for the transmission and other benefits that are maybe more subjective.

If you are going to lease it for 3 years and trade it in and you are not towing to capacity then the gasser might be better for many people. If you are owning for the long haul and towing heavier loads then maybe the oil burner is the way to go.
Ford's powertrain warranty doesn't change for diesels I see the engine itself is 100,000 so it drops out before it pays off.
 
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Old Oct 2, 2017 | 11:26 AM
  #14  
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Redrockerstl55
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From: St Louis Suburbs
Originally Posted by j759ll
Ford's powertrain warranty doesn't change for diesels I see the engine itself is 100,000 so it drops out before it pays off.
Warranty on the gasser is 60,000. So if a problem occurs between 60,000 and 100,000 you pay with the gasser and it's covered with the PSD.

Advantage PSD.
 
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Old Oct 2, 2017 | 11:29 AM
  #15  
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Robb81
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From: Texas
Originally Posted by Redrockerstl55
From what I can tell, gathering data from not just this thread but many others, is the 6.7 gets about 3 MPG better than the gasser.

So the break even with that advantage and using $3.00 diesel (Diesel is cheaper than 87 octane where I live...$2.39 is what I paid this weekend...I know it's higher is other areas of the country).

My rough math estimate puts the break even at around 125-135,000 miles for the PSD upgrade.

This doesn't take into consideration any repairs (you get a much longer warranty with the PSD) or the cost of maintenance. What you do get is higher capacity, easier towing, less work or shifting for the transmission and other benefits that are maybe more subjective.

If you are going to lease it for 3 years and trade it in and you are not towing to capacity then the gasser might be better for many people. If you are owning for the long haul and towing heavier loads then maybe the oil burner is the way to go.
The fact that a diesel with 40k, 80k or even 120k miles is worth considerably more than a gasser is a factor I consider. Really makes it very close to a wash money wise even counting DEF, higher $$$ oil changes, etc. and you get the advantages of the diesel.
 
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