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Old 12-21-2014, 03:44 PM   #71
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i didn't find their mileage numbers very impressive. i know the RAM 1/2 ton uses a very slick shifting 8 speed automatic to get their numbers. that would have been a worthy addition to the new F150 or even to an upcoming revised Tundra. the premium for an aluminum body, at least for me, would have to suggest much better mileage numbers than those released.
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Old 12-21-2014, 04:28 PM   #72
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I see talk about ten speed automatics for Detroit. MPG will continue to climb.
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Old 12-22-2014, 09:05 AM   #73
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Yes, for the 2015 the larger 36 gallon tank must be specified. I have 36 gallon tank on my 2013 and very nice for extending your range when towing.
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Old 12-22-2014, 11:12 AM   #74
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I see talk about ten speed automatics for Detroit. MPG will continue to climb.
Just drove our 2012 F150 EB 44, SuperCab 1,230 miles (no AS in tow) from San Diego to our place in MT, average speed 70-80MPH. Read an earlier thread here about 87-88 octane giving better mileage than 85-86; I switched to the higher octane and noticed 3 miles better~ 18.4mpg for this trip. Typically I average 14-15 on this trip. Did not try 90+ octane...not sure if that would improve more?
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Old 12-22-2014, 05:16 PM   #75
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Just drove our 2012 F150 EB 44, SuperCab 1,230 miles (no AS in tow) from San Diego to our place in MT, average speed 70-80MPH. Read an earlier thread here about 87-88 octane giving better mileage than 85-86; I switched to the higher octane and noticed 3 miles better~ 18.4mpg for this trip. Typically I average 14-15 on this trip. Did not try 90+ octane...not sure if that would improve more?
If you look around the web on this subject, most sources will say that higher octane won't improve mileage significantly. There will be more power per stroke, and improved performance in engines designed and tuned for higher octane, but for some reason these factors will not result in improved mileage.

I've played at trying to improve mileage for years with various RVs. My unscientific results: reducing speed can help somewhat, but the biggest factor seems to be wind velocity and direction. Love those tailwinds.
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Old 12-24-2014, 04:59 PM   #76
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if your engine is not tuned for higher octane, you are wasting your money at the pump. i am sure your vehicle's owner's manual suggests the octane level for which the engine has been optimized. i'd stick with that recommendation. speed, weight, wind, probably in that order, limit what you can reasonably expect to achieve.

i also believe folks tend to think too small when considering tow vehicles. 'just enough' sometimes gets you worse mileage than going a step bigger. right now i can attest to the fact that the Ford 6.7 diesel is a real winner on both tow power and mileage numbers. i had considered the eco boost 6 cylinder but dismissed the notion sometime ago as i expected the mileage numbers to tank. folks i know that use that engine confirm my supposition.

current tow vehicle is a Ford F350 crewcab, 4x4, pretty much standard fare out this way, and towing a 25FB at highway speeds up to about 70, getting 15.5 via long division. not towing, this truck gets 22.5 at those same highway speeds. but most important, i can maintain any speed i choose both up and down the mountain passes.
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Old 12-24-2014, 11:30 PM   #77
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In the trucking business I learned early on that bigger was better. Maybe not so much with fuel milage but the engines worked much less with more horsepower.

My Ford dealer talked me out of a diesel because of the higher maintenance costs and in his opinion the EcoBoost was the way to go.
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Old 12-25-2014, 01:08 AM   #78
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In the trucking business I learned early on that bigger was better. Maybe not so much with fuel milage but the engines worked much less with more horsepower.

My Ford dealer talked me out of a diesel because of the higher maintenance costs and in his opinion the EcoBoost was the way to go.
My Ford dealer talked me out of moving to the diesel also...said why pay the extra costs of maintenance and fuel? Said for 7K-8K~ pound trailer, EB is what he would be using....still wondering about the fuel...going from sea level in SD to 4K+ altitude in MT, I did notice fuel improvement...could also be less ethanol?
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Old 12-25-2014, 04:51 AM   #79
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I see talk about ten speed automatics for Detroit. MPG will continue to climb.
It's more than talk, it's nearly complete. This article suggests 2017 model year.

"The rumor has it the first prototypes were installed in test vehicles late last year, and the controller software development is in full swing right now. Unless the software team is working extra fast, 2015 CY is unlikely. Likewise for the production tooling, I doubt that it is possible to tool up this transmission within 18 months of first vehicles level prototypes. While it is possible that this transmission shows up for 2016 model year in late 2015, it seems more likely that it actually does not show up till the middle of 2016 for 2017 model year vehicles."

I think the real sweet spot for purchasing this truck is going to be 2017/18 after the aluminum and 10 speed have been out a while.
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