22.5 Mpg
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Senior User
Joined: Feb 2006
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22.5 Mpg
After reading so many poor MPG reports, I am truly suprised that I am getting such good MPGs. The trick it seems is to keep boost as low as possible. On the hwy I am getting 22.4MPGs running at 65MPH. In stop and go traffic, I am getting 17.5MPGs. I love this compared to my old v10 gasser.
Specs:
2008
4x4
6.4
manual tranny
3.73
Dave
P.S. This truck is such a blast to drive. I love it!!
Specs:
2008
4x4
6.4
manual tranny
3.73
Dave
P.S. This truck is such a blast to drive. I love it!!
Last edited by dwilliamsceg; Jan 17, 2008 at 07:54 PM. Reason: spelling
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From: Lufkin
3.73's with a stick must be the way to go then.
Most of us with bad mileage have 4.10 gears...I also have an automatic.
On the HWY (with no load or anything) I get around 15 mpg...11 around town at best.
Most of us with bad mileage have 4.10 gears...I also have an automatic.
On the HWY (with no load or anything) I get around 15 mpg...11 around town at best.
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Joined: Apr 2004
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From: Raleigh NC
Terrible Mileage Cetane???
3.73 Lariot Crew Automatic ~~8.5 MPG with twin axle 7x12 box trailer 5500 lbs in combined city and highway. Have 11000 miles on it.
Had new radiator yesterday. Service Advisor said that many come in to buy the Ford Cetane Boost product. I bought 2 containers. Filled up and added the 4 ozs that were recommended. He said he got and additional 2 MPG using the product. He also said that Chevy and Dodge owners stopped in to buy the product. We shall see???
Had new radiator yesterday. Service Advisor said that many come in to buy the Ford Cetane Boost product. I bought 2 containers. Filled up and added the 4 ozs that were recommended. He said he got and additional 2 MPG using the product. He also said that Chevy and Dodge owners stopped in to buy the product. We shall see???
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From: Aromas, CA
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From: Central Massachusetts
Great news, thats what is so great about this web site, you have guys on both extremes like True4.2 pushing the limits of the 6.4 and other guys are finding the secret of the manual and 3.73's. Sure hope Ford is working on a 2nd overdrive for the auto that can give the big haulers the versatility of getting a ratio when mty, maybe the 2010's?
Junior User
Joined: Aug 2006
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DWILLIAMSCEG,
Is that a Dual wheel or SRW version, and a 250 or 350?
That is slightly better than my 2006 6.0. F350
I am currently ordering a 2008, F350 DRW manual trans. like my 6.0 which had 4.10 gears, and was going to stay with the 4.10's as with a manual it is just where and when you are using which gear when towing except for level and downhill highway stretches, where the 3.73's would allow the motor to turn at a lower rpm and therefore use a little less fuel. But even that my backfire as you may need more boost to maintain speed and that seems to be what everyone is complaining about for losing mileage.
My current reasoning is as follows: The 6.0 had no problem pulling my 48' 18,000 GVW race car trailer with 4.10 gears. The 3.73's are less than a 10% change but the 6.4 makes much more than 10% torque and horsepower over a wider range. So maybe I can stay with the 3.73's for the mileage and still have at least the same power or better. Any other opinions on this would be appreciated.
Thanks,
Is that a Dual wheel or SRW version, and a 250 or 350?
That is slightly better than my 2006 6.0. F350
I am currently ordering a 2008, F350 DRW manual trans. like my 6.0 which had 4.10 gears, and was going to stay with the 4.10's as with a manual it is just where and when you are using which gear when towing except for level and downhill highway stretches, where the 3.73's would allow the motor to turn at a lower rpm and therefore use a little less fuel. But even that my backfire as you may need more boost to maintain speed and that seems to be what everyone is complaining about for losing mileage.
My current reasoning is as follows: The 6.0 had no problem pulling my 48' 18,000 GVW race car trailer with 4.10 gears. The 3.73's are less than a 10% change but the 6.4 makes much more than 10% torque and horsepower over a wider range. So maybe I can stay with the 3.73's for the mileage and still have at least the same power or better. Any other opinions on this would be appreciated.
Thanks,
Elder User
Joined: Feb 2006
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From: Central Massachusetts
Originally Posted by CATANG MOTORSPORTS
DWILLIAMSCEG,
My current reasoning is as follows: The 6.0 had no problem pulling my 48' 18,000 GVW race car trailer with 4.10 gears. The 3.73's are less than a 10% change but the 6.4 makes much more than 10% torque and horsepower over a wider range. So maybe I can stay with the 3.73's for the mileage and still have at least the same power or better. Any other opinions on this would be appreciated.
Thanks,
My current reasoning is as follows: The 6.0 had no problem pulling my 48' 18,000 GVW race car trailer with 4.10 gears. The 3.73's are less than a 10% change but the 6.4 makes much more than 10% torque and horsepower over a wider range. So maybe I can stay with the 3.73's for the mileage and still have at least the same power or better. Any other opinions on this would be appreciated.
Thanks,
Thread Starter
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Senior User
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Originally Posted by CATANG MOTORSPORTS
DWILLIAMSCEG,
Is that a Dual wheel or SRW version, and a 250 or 350?
That is slightly better than my 2006 6.0. F350
I am currently ordering a 2008, F350 DRW manual trans. like my 6.0 which had 4.10 gears, and was going to stay with the 4.10's as with a manual it is just where and when you are using which gear when towing except for level and downhill highway stretches, where the 3.73's would allow the motor to turn at a lower rpm and therefore use a little less fuel. But even that my backfire as you may need more boost to maintain speed and that seems to be what everyone is complaining about for losing mileage.
My current reasoning is as follows: The 6.0 had no problem pulling my 48' 18,000 GVW race car trailer with 4.10 gears. The 3.73's are less than a 10% change but the 6.4 makes much more than 10% torque and horsepower over a wider range. So maybe I can stay with the 3.73's for the mileage and still have at least the same power or better. Any other opinions on this would be appreciated.
Thanks,
Is that a Dual wheel or SRW version, and a 250 or 350?
That is slightly better than my 2006 6.0. F350
I am currently ordering a 2008, F350 DRW manual trans. like my 6.0 which had 4.10 gears, and was going to stay with the 4.10's as with a manual it is just where and when you are using which gear when towing except for level and downhill highway stretches, where the 3.73's would allow the motor to turn at a lower rpm and therefore use a little less fuel. But even that my backfire as you may need more boost to maintain speed and that seems to be what everyone is complaining about for losing mileage.
My current reasoning is as follows: The 6.0 had no problem pulling my 48' 18,000 GVW race car trailer with 4.10 gears. The 3.73's are less than a 10% change but the 6.4 makes much more than 10% torque and horsepower over a wider range. So maybe I can stay with the 3.73's for the mileage and still have at least the same power or better. Any other opinions on this would be appreciated.
Thanks,
I do not tow that often but we take extended trips across the country twice a year where I tow a Jeep on a trailer or a boat.
