| Bad-and I mean BAD MPG - not GMC [message #203317] |
Mon, 01 April 2013 16:32  |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
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Here is an interesting thread where SOB owners are talking about the MPG they get with their rigs. I think it's interesting that all of the respondents are running significantly newer drive-trains than any of us with all the benefits of electronics, but no better mileage.
<http://community.fmca.com/topic/5312-bad-and-i-mean-bad-mpg>
Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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| Re: [GMCnet] Bad-and I mean BAD MPG - not GMC [message #203395 is a reply to message #203391] |
Tue, 02 April 2013 08:53  |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
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I like this part....
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The jeep actually weighs 5047 lbs. with a full tank of fuel. But we always plan to pull it with only about a half tank at the very most
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because 10 gallons of gas makes such a difference on top of 5000 lbs!
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: Bad-and I mean BAD MPG - not GMC [message #203413 is a reply to message #203317] |
Tue, 02 April 2013 11:36 |
Chr$
Messages: 2690
Registered: January 2004
Location: Scottsdale, AZ
Karma: 1
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I can attest to the lower mileage regardless of drivetrain.
On my trip to Camp Verde Rally with my 2009 4.6L V8 Sport Trac and 6000 Lb trailer, 70MPH or less, including climbing the big hill at 70: 9MPG Water tank was empty due to anticipated hookups at the campsite.
On my trip to Tucson, same rig, mostly flat, 70MPH or less 8MPG. Both trips about 100 miles each way. Had full Water tank on this trip. Dumped waste about 45 Miles into the trip.
Of course the frontal area of the trailer is a big brick.
I could hear the airflow.
Overall weight of the rig is 11,000 lbs, about the same as the GMC. The little OHC V8 was sucking down the fuel on the climbs. The six speed auto did hunt a few times. I was able to maintain speed on the climbs though.
I had the truck on the scale yesterday at the metal recycler 5,060 LBS.
-Chr$: Perpetual SmartAss
Scottsdale, AZ
77 Ex-Kingsley 455 SOLD!
2010 Nomad 24 Ft TT 390W PV W/MPPT, EV4010 and custom cargo door.
Photosite: Chrisc GMC:"It has Begun" TT: "The Other Woman"
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| Re: Bad-and I mean BAD MPG - not GMC [message #203415 is a reply to message #203317] |
Tue, 02 April 2013 11:42 |
Chr$
Messages: 2690
Registered: January 2004
Location: Scottsdale, AZ
Karma: 1
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Senior Member |
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Oh, and this is with oxygenated fuel. Which sucks for MPG. When they used to switch between "winter" and "summer" fuel I noticed a 1-2 MPG drop on my usual daily commute.
The best I ever got (I think) in my GMC was about 8 MPG, usually closer to 6 before the carb rebuild and intake replacement.
-Chr$: Perpetual SmartAss
Scottsdale, AZ
77 Ex-Kingsley 455 SOLD!
2010 Nomad 24 Ft TT 390W PV W/MPPT, EV4010 and custom cargo door.
Photosite: Chrisc GMC:"It has Begun" TT: "The Other Woman"
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| Re: [GMCnet] Bad-and I mean BAD MPG - not GMC [message #203420 is a reply to message #203395] |
Tue, 02 April 2013 12:24 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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| Keith V wrote on Tue, 02 April 2013 06:53 |
I like this part....
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The jeep actually weighs 5047 lbs. with a full tank of fuel. But we always plan to pull it with only about a half tank at the very most
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because 10 gallons of gas makes such a difference on top of 5000 lbs!
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10 gallons of gas is what 80 to 90 lbs? I always keep the towd full of fuel... just in case I need to use it. I _AM_ driving an OLD motorhome!
This guy is traveling with well over 20,000lbs, in a large brick shaped rig, at 70 mph, with a gasoline powered motor and expecting good gas mileage. He MIGHT get it slowing down and using a diesel.
I also see them worried about the trasmission down shifting, thinking it is hurting mileage. That's it, lug the engine and expect it to run efficiently.
I do like another persons comment: "I didn’t by a motor home with the thought there would be a payback down the road." 
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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