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04-07-2011, 05:05 AM
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#1
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Member
Freightliner Owners Club
Join Date: Mar 2011
Posts: 50
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we took our first big trip yesterday to Memphis and got 4-5 mpg. This is a 2010 31FK with now 1800 miles on it. So when does it improve? I was expecting about 7-8 mpg. towing a Hyundai.
Gary
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Gary & Cynthia
Mazon, Illinois
2007 Tuscany-"Gus"
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04-07-2011, 05:42 AM
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#2
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Senior Member
Join Date: Aug 2010
Posts: 289
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Soon I hope, wow-the semi trucks I have driven pulling a load, got at least that for mpg.
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04-07-2011, 05:48 AM
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#3
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Junior Member
Winnebago Owners Club
Join Date: Nov 2008
Posts: 20
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I have an '08 Jayco Melbourne, same engine, towing a Honda CR V and get over 9 mpg, but I drive about 60 mph. Anything over that, and mileage decreases significantly.
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04-07-2011, 05:54 AM
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#4
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Member
Join Date: Jan 2011
Posts: 54
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How fast were you driving? Big difference between 60-62 and 70-75. Remember your pushing a vehicle down the road with the profile of a house.
It would be interesting to have an engineer figure out the estimated difference in the resistance between 60 and 70 mph on a level road. Any engineers out there??
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04-07-2011, 05:56 AM
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#5
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Member
Fleetwood Owners Club Solo Rvers Club
Join Date: Feb 2010
Posts: 80
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My first tank fill-up gave me 15 mpg, the second 4mpg.
After I learned how to fill (top-off) I got it steady....
Gerard.
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04-07-2011, 07:57 AM
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#6
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Member
Freightliner Owners Club
Join Date: Mar 2011
Posts: 50
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guess i'll slow down some.
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Gary & Cynthia
Mazon, Illinois
2007 Tuscany-"Gus"
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04-07-2011, 07:58 AM
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#7
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Member
Freightliner Owners Club
Join Date: Mar 2011
Posts: 50
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Quote:
Originally Posted by pa0gri
My first tank fill-up gave me 15 mpg, the second 4mpg.
After I learned how to fill (top-off) I got it steady....
Gerard.
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=
so what did you do different?
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Gary & Cynthia
Mazon, Illinois
2007 Tuscany-"Gus"
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04-07-2011, 09:58 AM
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#8
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Senior Member
Join Date: Jul 2000
Location: Las Vegas, NV
Posts: 1,255
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With your size of a coach cruising between 58 & 62 you should get between 8 to 10+mpg. Our coach with the v10, the mpg improved by a couple of mpg after approximately 8k miles. Overall average since new has been around 7pmg and I'm OK with that considering it's a 38' coach weighing 21,230lbs towing a 3,200lb vehicle.
Good luck and safe travels
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Jim & SherrySeward
2000 Residency 3790 v10 w/tags
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04-07-2011, 10:30 AM
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#9
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Senior Member
Ford Super Duty Owner Thor Owners Club
Join Date: Aug 2010
Posts: 829
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Running the generator will drop your MPG also. Getting same fill up each time in RV's I think is harder then a car. 55 MPH will greatley improve MPG also. I know that is slow and seems to take forever to get were you are going.
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Mike, Janet & Duchess (cavalier King Charles)
2008 35B windsport, Brazel's rear TracBar, Koni shocks & Safe T plus steering
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04-07-2011, 10:41 AM
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#10
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Mar 2005
Location: San Diego County, CA
Posts: 362
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Moving a house on wheels down the highway equals $$$$. If you opt to do this you should really not be worried about mileage. Then that said....SLOW DOWN! Mileage really improves the slower you move. My speed is normally 60-64. I have been pasted many times by folks pushing their house on wheels at regular car speeds of 70/75 and I often wonder what in the world would they do if a tire blew or a gust of wind hit them. But really I have never seen a Motorhome pushed over or sitting along the road with a blown tire so I guess they are moving fast and not worrying about gas prices and miles/gallon!
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Steve & Leslie
Winnebago Adventurer 38T
Honda CR-V "Toad" w/Falcon 2 towbar
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04-07-2011, 06:38 PM
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#11
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Moderator Emeritus
Vintage RV Owners Club Texas Boomers Club Oklahoma Boomers Club Ford Super Duty Owner
Join Date: Aug 2000
Location: Cypress, TX
Posts: 11,983
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You start pushing up over 65 to 70 mph, the fuel economy will DROP. Keep at a max of 65 mph.
Ken
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Amateur Radio Operator|Practicing for our retirement! 2008 Cameo 35SB3 - 2002 7.3L Crew Cab Dually w/ a SCMT - Max Brake - Travel with one Miniature Schnauzer, one Standard Schnauzer and one small Timneh African Gray Parrot
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04-07-2011, 06:51 PM
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#12
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Senior Member
Forest River Owners Club Texas Boomers Club
Join Date: Mar 2011
Posts: 702
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First tank 13.8MPG, flat highway and not pulling anything. Coachmen, 2011 Concord 300TS, with V10, 6.8. Driving 60 to 62MPH. Fast enough to get me where I'm going. I retired to take my time and enjoy life, so why go any faster.
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2011 Coachmen Concord, Ford E450
DRosedale, BRosedale and Yorkies, Max, Molly, Harley
Pineville, LA
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04-08-2011, 10:06 AM
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#13
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Senior Member
Mid Atlantic Campers Fleetwood Owners Club
Join Date: Jun 2010
Location: Mechanicsburg, PA
Posts: 239
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We have a 32' Coachmen Class C with the V-10. Average highway speed 70-75 will net me around 7 to 7 1/2 mpg.
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Earl
2012 Bounder Classic 34B
My Albums
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04-10-2011, 06:39 AM
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#14
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Member
Freightliner Owners Club
Join Date: Mar 2011
Posts: 50
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on the return trip doing 60 (by speedometer) and 58 (by GPS) got 8.5 to 9 mpg. better and takes a little longer. no hard accelerating and RPM's were low (2200 to 2600). was a flat road and low wind.
the 65 to 70 mph posts with reasonable results really seem surprising. Flat--no wind?
*
so what's the key to this?
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Gary & Cynthia
Mazon, Illinois
2007 Tuscany-"Gus"
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