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Old 05-28-2016, 04:25 PM   #43
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2016 30' Classic
Lorton , Virginia
Join Date: Jul 2015
Posts: 388
2016 RAM 2500 Power Wagon with 6.4L Hemi
2016 Classic ~9,000lbs

I get about 9 MPG at level 65 MPH. My only solace is that it's the cheap 87 octane!
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Old 05-28-2016, 04:34 PM   #44
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2006 34' Classic
Fort Worth , Texas
Join Date: Feb 2007
Posts: 280
Thing that effect fuel milage:
Speed. To double the speed you must square the horsepower requiring more fuel.
Weight. Changes rolling resistance.
Wind. Headwind or tailwind component. That takes care of the headwind/tailwind portion of the wind direction.
Tire pressure. Changes rolling resistance,i.e., drag (drag uses fuel the same as speed increases).
Wheel alignment. Effects rolling resistance (drag).
Brake usage. Braking equals drag. Grade braking downhill reduces free wheeling of the tranny.
Accelerator. Manual usage verses cruise control.
Idling engines. Use fuel.
Traffic. Uses fuel because of uneven accelerator use as well as excessive idling and brake use.
Windows. Open or closed, effects drag.
Air dams. Lowers wind resistance under the vehicle.
Skirts. Think tractor trailers. Lessens drag.
External protuberances (things we mount on the outside of our vehicles). Drag. How smooth is the surface?
Some of these are infinitesimal, but added up and the fuel mileage goes down.
Others?
guskmg
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Old 05-28-2016, 05:15 PM   #45
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2014 25' FB Flying Cloud
Mattituck , New York
Join Date: Nov 2015
Posts: 25
Our 2014 Hemi on The Natches Trace Pkwy towing 25 AS 14.6
Our Eco Diesel at 55 almost 20
At 60 18
At 62 16
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Old 05-28-2016, 06:04 PM   #46
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2016 20' Flying Cloud
Centennial , Colorado
Join Date: May 2006
Posts: 1,098
I have a Chevy V-8 6.2 and towed my Flying Cloud 20 up to 9000 feet yesterday. Averaged 11.9 mpg
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Old 05-28-2016, 06:26 PM   #47
Gordon
 
2014 30' International
Scarborough , Ontario
Join Date: Jan 2012
Posts: 23
30' International, 2012 F150 Ecoboost 60mph +/-
11 mpg with the AS
18 mpg without
37% less mpg when towing
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Old 05-28-2016, 06:39 PM   #48
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Vintage Kin Owner
Good Ol' , USA
Join Date: Mar 2014
Posts: 1,606
Images: 49
1987 Avion 34W, 1995 Ford F-250 7.3L PowerStroke...... 12-14 mpg towing, up to 20 mpg alone.


PaulnGina
1987 Avion 34W
1995 Ford F250 7.3L PowerStroke

Blessed and highly favored
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Old 05-28-2016, 06:41 PM   #49
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2014 27' Flying Cloud
Stowe , Vermont
Join Date: Sep 2009
Posts: 170
2015 Ford F250 w. Diesel 6.7 engine - varying terrain between 65 - 70 mph on Interstate - about 12 mpg. Basic flat or rolling Interstate same speed - between 14 to 16 mpg.
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Old 05-28-2016, 07:52 PM   #50
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1996 25' Excella
Tillsonburg , Ontario
Join Date: Aug 2014
Posts: 604
25 ft Excella on Dakota quad cab with 4.7 and 355 rear end I get 11-12 on the level but head winds, rain and hills take that down to 10 or a bit less. Of interest I got the same mileage pulling an 8 foot U-haul. Shows what the AS body shape means in towing at high speed. Without the trailer I can get 17 -20 no problem
JCW
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Old 05-28-2016, 08:15 PM   #51
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2016 30' Classic
Santa Rosa , California
Join Date: Apr 2015
Posts: 134
2016 RAM 2500 with Cummins engine. Did roughly the same 1000 mile trip twice: (1) towing 30 ft Classic, 14 mpg average. (2) Without the TT, 18 mpg average, both from truck's computer readings. At a steady 55 mph on flat terrain, I often see 15-16 mpg towing, and 20-21 not towing. I'm expecting a slight improvement after truck reaches 6000 total miles, when Cummins says engine will be fully broken in.
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Old 05-28-2016, 10:01 PM   #52
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Okemos , Michigan
Join Date: Nov 2012
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6000 miles through the southwest and across the rockies - 9.7 2011 F150 Eco with a 25 ft Eddie Bauer. Lots of wind and 70 MPH when speed limit allowed. I would even go a bit faster in places like New Mexico where I had 20 miles of visibility and no traffic.
I am fascinated by how much interest MGP draws. Is it an issue of economics and affordability or is there something else which draws such attention?
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Old 05-29-2016, 06:02 AM   #53
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2008 19' Bambi
Austin , Texas
Join Date: Feb 2006
Posts: 110
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2015 Ram 1500 EcoDiesel 4x4 pulling 2008 19' Bambi. Worst 16 mog / best 19 mpg. Without I have seen 22 worst to 26 best acording to gastracker. I do a lot of highway toll road driving and with 85 mph speedlimits + fudge factor of 5 mph getting the non towing gas millage is awsome. Towing i try to keep it below 70 around 68 cruise. I make trips from central Texas to Port Aransas, or Big Bend. See flat to hilly roads
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Old 05-29-2016, 06:29 AM   #54
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2007 28' Classic
Ivanhoe , Virginia
Join Date: Aug 2015
Posts: 31
Angry What's your towing mpg?

When checking your mileage, do not go by the tv display calculator but do the math. The onboard "lie-ometer" is notoriously inaccurate in most cases. My 06 Ram 3500/4wd/Cummins/dually shows a consistent 16-17mpg towing an 07 Classic Limited, 29'. Doing the math shows in the 12-13 mpg with which I am happy, towing in the 60-65mph range. I note the same variations driving empty, from 20-22mpg by computer to 17-18 by the math.

I notice similar variations in our 2014 Subaru Outback, but variation is only about 10%.
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Old 05-29-2016, 07:02 AM   #55
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2017 30' Classic
Upper St Clair , Pennsylvania
Join Date: Aug 2011
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10,000 mile trip in summer and fall of 2015 - F350 6.7 Diesel with replacement 50 gallon Titan tank; towing a 2015 30' FC at between 55-70 depending on road and terrain. Traveled from Western PA to WA, down to AZ, up thru UT etc and back. 13.5MPG. Our previous "toy" was a 38' MotorHome - 6MPG.

Bud
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Old 05-29-2016, 10:17 AM   #56
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2010 20' Flying Cloud
Lakeside , Montana
Join Date: Aug 2010
Posts: 76
22' FC in driveway, F150 in garage - unlimited.
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