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12-16-2016, 10:21 AM
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#57
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Senior Member
Mid Atlantic Campers Carolina Campers
Join Date: Jan 2008
Location: Mount Airy (Mayberry) NC
Posts: 849
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What is your rear gearing and do you ever leave town I get 14 to 16 just in the city
__________________
2010 Holiday Rambler Savoy 326RXL
2011, Ford, F250 srw, 6.7
Life member GoodSam, KOA, F.R.O.G
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12-16-2016, 08:32 PM
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#58
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Senior Member
Join Date: Sep 2012
Location: Palm Coast Florida
Posts: 12,995
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I am towing 15,500lbs and get 10mpg on with a F-450 with 4.30 gears. Best was 11.2 with a tailwind. Worse was 9 into a head wind.
I remember the strong tail wind. It made the whole trip super easy. Gotta love a tail wind
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12-16-2016, 08:38 PM
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#59
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Senior Member
Join Date: Oct 2016
Posts: 351
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Quote:
Originally Posted by Tugboat
What is your rear gearing and do you ever leave town I get 14 to 16 just in the city
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I have 3.55 gears and live out west up and down highways. This tank was unloaded and was 16.7. My last loaded tank with 15,800 load was 11.2 on a 400 mile trip.
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12-20-2016, 07:07 PM
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#60
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Junior Member
Join Date: Dec 2016
Location: Louisville
Posts: 1
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Yup that's about right 1800 rpm is the magic number. 10.5 to 12.0
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12-20-2016, 07:28 PM
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#61
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Senior Member
Join Date: Oct 2016
Posts: 351
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Quote:
Originally Posted by Tbell2288
Yup that's about right 1800 rpm is the magic number. 10.5 to 12.0
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Exactly
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12-21-2016, 03:06 PM
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#62
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Member
Join Date: Sep 2012
Location: Massachusetts
Posts: 53
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I have a 2011 6.7 ford and get about 11.5 mpg with a montana with a gvw of 1300 lbs. I have 3.31 gears. While heading to California 2 years ago we had 40 mph headwinds and the tuck said 4.5 mpg. I thought the pickup was wrong until I fueled up and did the math and the computer was right. I got 7.6 mpg on that tank of fuel so the computer was right at 4.5 mpg for that particular point of the journey.
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12-28-2016, 07:46 PM
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#63
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Senior Member
Mid Atlantic Campers Carolina Campers
Join Date: Jan 2008
Location: Mount Airy (Mayberry) NC
Posts: 849
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Just drove 483 miles towing my empty car trailer and this is the milage I got coming from NC to PA
__________________
2010 Holiday Rambler Savoy 326RXL
2011, Ford, F250 srw, 6.7
Life member GoodSam, KOA, F.R.O.G
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12-28-2016, 07:54 PM
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#64
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Senior Member
Join Date: Oct 2016
Posts: 351
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Quote:
Originally Posted by Tugboat
Just drove 483 miles towing my empty car trailer and this is the milage I got coming from NC to PA
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You would have way more than 241 miles left on the over half full tank of fuel you have if you were actually getting that mileage.
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12-28-2016, 09:45 PM
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#65
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Senior Member
Mid Atlantic Campers Carolina Campers
Join Date: Jan 2008
Location: Mount Airy (Mayberry) NC
Posts: 849
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We went through this before and the numbers worked out with a fill up. I will not be filling up till I get back down to VA as the fuel up here is $2.91 and down there it is $2.29 near my house across the boarder in VA it is $2.23 yesterday
__________________
2010 Holiday Rambler Savoy 326RXL
2011, Ford, F250 srw, 6.7
Life member GoodSam, KOA, F.R.O.G
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12-28-2016, 09:49 PM
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#66
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Senior Member
Join Date: Oct 2016
Posts: 351
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Quote:
Originally Posted by Tugboat
We went through this before and the numbers worked out with a fill up. I will not be filling up till I get back down to VA as the fuel up here is $2.91 and down there it is $2.29 near my house across the boarder in VA it is $2.23 yesterday
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Be amazing mileage if it holds. Keep that one!
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12-29-2016, 06:18 AM
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#67
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Senior Member
Newmar Owners Club
Join Date: Jun 2012
Location: Spicewood Texas (West of Austin)
Posts: 4,511
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Quote:
Originally Posted by Tugboat
Just drove 483 miles towing my empty car trailer and this is the milage I got coming from NC to PA
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My F250 6.7 will not get anywhere close to that, empty. The best it's ever done on flat road is 17.5.
__________________
Scotty and Kristen, Airedales Dagny and Wyatt
2007 Newmar Mountain Aire 4528, 450 HP ISM, Allison 4000, 8 Lifeline AGM's
2019 F250 King Ranch 4x4 Powerstroke - SOLD
2022 F350 DRW King Ranch 4 x 4
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12-29-2016, 07:05 AM
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#68
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Member
Join Date: Jun 2016
Posts: 31
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Quote:
Originally Posted by Scottybdivin
My F250 6.7 will not get anywhere close to that, empty. The best it's ever done on flat road is 17.5.
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It's easy, fill up, head for the flatest highway you can find and get to 65 mph, now the trick, reset your gauge! Stay on cruise control for a couple hundred miles and then take pic of amazing mpg's.
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12-29-2016, 07:23 AM
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#69
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Member
RV Trip Wizard Grand Design Owners Club
Join Date: Sep 2014
Posts: 46
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Quote:
Originally Posted by IC2
If you have a pre '16 Short Bed Ford, that tank has about a 28 gallon capacity while a Long Bed has about a 39 gallon tank. My last truck was not only a SB but a V10 gasser which meant at 7 mpg towing 12K (196 miles) I needed, for safety's sake, to plan my next gas stop as I pulled out of the current gas station. The current truck at 11 plus mpg towing the same 5er and 39 gallons (429 miles) means I can drive most of the day on a tank of diesel. The DEF tank is about 5 gallons regardless of bed length. 2016, no idea as to what tank sizes are, but are probably the same as earlier as the truck is virtually identical, frame, bed and cab. A 2017 - might be a different beast all together
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I was watching an internal Ford Video while at the Ford Buffalo Stamping Plant and the 2017 because it is aluminum will have a larger fuel tank, something like an additional 5 gallons.
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Therese, Jim, Ginger (Miniature Dachshund)
2018 F350 DRW Lariat Diesel
2020 Grand Design 375-RES
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12-29-2016, 08:11 AM
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#70
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Senior Member
Join Date: Jun 2010
Location: Upstate New York
Posts: 3,722
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I just did 23.4 over a ~95 mile round trip according to my ScanGauge* which is right on with hand calculations. Empty truck, local interstate speed (65-70mph). The Ford OEM dash Lie-O-Meter is close at best, way off either way, not unusual and currently reading 15.3 but that's over several tanks and, unfortunately, mostly town driving.
Whatever it is, still a heluva lot better then the '06 V10 F350 that preceded it or any of the other gassers before that F350. I didn't buy it for fuel mileage. It was purchased to pull our 5er a lot easier then the V10.
Good fuel mileage is just a benefit though there are lots of other 'things' that can cost bucks and occasionally do fail and need to be added on make thinking about decent mpg pointless. Walmart's ~5 buck per gallon Peak DEF needs to be calculated into your mpg along with 100+ dollar oil changes vs $30, 150 dollar fuel filter changes vs $15 and 40 gallons of coolant that need changing as well at about $250 every 75-100,000 miles .
* https://www.scangauge.com/
__________________
Dave W
2011 Ford F250 6.7 Lariat CCLB, Gone but not forgotten
2014 Montana High Country 343RL (sold it!)
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