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05-03-2016, 02:14 PM
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#1
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Member
Join Date: Jan 2016
Location: Ancaster
Posts: 49
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Gas mileage & the posted speed limit
Newbie question perhaps, but nonetheless.....
When the speed limit is 70 is it best to drive 55? or 60?
On our first trip we drove as per the posted speed limit, and we worked out the miles per gallon to around 6 miles per gallon.
We have a gas powered 2013 Greyhawk 31FS
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2017 Hummingbird 17RB
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05-03-2016, 03:35 PM
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#2
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Senior Member
Join Date: Mar 2015
Location: Port Orchard
Posts: 2,065
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I keep my speed between 60 and 65 most of the time unless the posted speed limit is less than that. I average between 8.5 and 9.0 mpg as per a Scangauge. Mileage will drop considerably if doing a lot hills or you have a headwind. A 3000 mile trip last year from west to east coast yielded 8.2 mpg without towing.
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Don
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05-03-2016, 04:06 PM
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#3
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Senior Member
Join Date: Jul 2014
Location: Fuquay-Varina
Posts: 884
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I have checked mileage several times the old school way using the odometer and it ranged from 7.7 (very strong headwind) to 9.1 mpg. The average seems to be about 8.5. We drive at 60-62 mph.
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2014 Greyhawk 31FK
2007 Honda Shadow Sabre 1100cc
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05-04-2016, 06:26 AM
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#4
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Senior Member
Join Date: Jun 2015
Location: --
Posts: 2,392
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The last two years I traveled almost exclusively at 62mph. I think this year I'm going to just settle in at 65. I'm driving a house and I don't drive it all year long. Whatever I end up getting is what I end up getting.
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2023 Ford F-150 XLT SCREW 3.5EB (Max Tow Pkg., Black Appearance Pkg., Bed Utility Pkg.)
1727 Payload / 4150 RAWR
On the sidelines taking it all in.
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05-04-2016, 07:08 AM
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#5
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Site Team
Join Date: Jan 2011
Location: James Island, SC
Posts: 22,859
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At just under 65 my beast averages 11.5 mpg and stays in overdrive (low rpm's)
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Moderator
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05-04-2016, 07:30 AM
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#6
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Senior Member
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 10,726
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You have to try trips at different speed to see what your rig likes best... many find 62 the best for mileage..
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Seann
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 900watts of solar, Lithium batteries (400amp hour), 2000 watt (4000 surge) whole house inverter.
145days /2023 2022/151 2021[/COLOR]
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05-06-2016, 10:46 AM
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#7
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Senior Member
Join Date: Dec 2014
Location: North Central Texas
Posts: 428
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CanucksVenturingSouth, when reading responses to your query look at what rig the responder has. Diesel owners run at RPM at or slightly above max torque to get best MPG. Results for gas engines will be different.
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Walt
2019 Renegade Valencia 38RW
Gone: 2015 Jayco Seneca / 2010 Tiffin RED / ...
Toads: 2016 Jeep Wrangler Unlimited / 2012 Kia Soul
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05-06-2016, 10:56 AM
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#8
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Senior Member
Join Date: May 2014
Location: North Western West Virginia
Posts: 671
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It's a never ending discussion... comes down to what you are comfortable with, and feel SAFE with. There is often that little voice that says that maybe you should slow it down a bit.
We run at 55 to 60 depending on the road and weather conditions. We're in no hurry to get anywhere. We got 11.2 MPG on the trip to Florida, and have the new 6 speed transmission, and it makes a huge difference in mileage, noise and smoothness.
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The Logan's
2018 Jayco Alante 31v
Me, Dear Wife,
2 Bluetick Hounds
1 Newfoundland
1 Newfoundland / Black Lab Mix
1 Cairn Terrier
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05-06-2016, 01:01 PM
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#9
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Senior Member
Join Date: Jan 2015
Location: Surprise
Posts: 2,623
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Most vehicles will have a "sweet point" where you get maximum mileage and good response. I find just under 60 gives us both. Each vehicle set up will be different. I've been passed by rigs doing at least 80, in my mind there are out of their minds. Not only is not safe, no TT or 5er is designed to be towed at those speeds. We enjoy smelling the roses along the way, not seeing them on a coffin.
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2011 Toyota Tundra double cab
2015 27RLS
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05-07-2016, 07:12 PM
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#10
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Member
Join Date: Apr 2016
Location: Wilton Manors
Posts: 62
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Very happy with mileage on recent maiden trip. Averaged 10.9 mpg at cruise speed of 63 mph.
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Moe
2016 Redhawk 26X1
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05-07-2016, 07:18 PM
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#11
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Senior Member
Join Date: Mar 2015
Location: Port Orchard
Posts: 2,065
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Nice! I consistently come in at around 8.5. I get excited when I see 9.
Sure would like to have one of those critters in your profile pic. Spent it on a MH instead. MH is much cheaper in the long run but a used plane can be had for a lot less. I've been up in a little one around your area a couple of times. Fun, fun, fun!
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Don
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05-08-2016, 08:15 AM
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#12
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Senior Member
Join Date: Jul 2015
Location: Southern Illinois
Posts: 880
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62 mph seems to be a good "sweet spot" for most forms of travel with a trailer or motorhome. Certainly helps with the gas mileage and the control during a bad situation.
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Smooth Sailing,
Ric and Jan Golding
Southern Illinois
2016 Jayco Seneca 37FS
2016 Chevrolet Traverse
2018 Cheverolet Silverado
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