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07-19-2016, 04:38 PM
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#1
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Winnebago Camper
Join Date: Dec 2013
Location: Carterville, IL
Posts: 13
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Onan Generator fuel usage
I have a 7500 watt Onan Diesel generator on my '05 Journey. Does anybody know how much diesel fuel my generator will use in an hour? I want to boondock for several days and don't want to run out!
Thanks in advance...
Steve
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'05 Winnebago Journey 34H
2014 Honda CR-V
2012 Honda GoldWing
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07-19-2016, 04:45 PM
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#2
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Winnebago Owner
Join Date: Nov 2013
Location: Houston, Texas
Posts: 53
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i bet about half a gallon per hour or less. But probably not less than a 1/4 of a gallon.
We boondocked once with genset running 24/7 for 3.5 days... went from a full tank to just over 1/4 of a tank.
You can go much longer if you only run the genset when needed if you can.
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RVM#78 - -USAF- F-15 Eagle Radar Vet
2005 Fleetwood Revolution
'12 Chevy 2500HD
'15 Airstream International Signature 27FB
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07-19-2016, 04:54 PM
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#3
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Winnebago Camper
Join Date: Apr 2013
Location: Long Beach, Calif.
Posts: 5
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It all depends upon how much load the Gen is seeing
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Travel Supreme 03 40DS03
Cummins 400 HP ISL 8.9
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07-19-2016, 04:59 PM
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#4
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Winnebago Owner
Join Date: Aug 2013
Posts: 245
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You won't run out of fuel for the motor, the Generator can only draw the tank down to 1/4 of a tank then IT will stop, you see the generator's fuel pick-up is at the 1/4 tank level to prevent people from running their tanks empty and not being able to get fuel then.
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2012 Journey 40U (Our Incredible Journey)
2008 Dodge Dakota(TOAD) 2005 Honda Shadow in TOAD
AF-1 braking system
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07-19-2016, 05:15 PM
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#5
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Registered User
Join Date: Mar 2010
Posts: 340
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Quote:
Originally Posted by kb9adw
I have a 7500 watt Onan Diesel generator on my '05 Journey. Does anybody know how much diesel fuel my generator will use in an hour? I want to boondock for several days and don't want to run out!
Thanks in advance...
Steve
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kb9adw
The approximate amount of fuel my Onan burns per hour when under 1/2 load, and when under full load, is shown in the Operator's manual for my Onan.
Your Onan Operator's Manual should have that info also.
Mel
'96 Safari.
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07-20-2016, 04:45 AM
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#6
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Winnebago Owner
Join Date: Sep 2011
Posts: 90
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I burn between .7 and .8 gallons per hour powering both air conditioners and the refer.
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US Navy Vet, Liberty Tree Member of Oath Keepers, NRA & VFW Life Member, Alaska EMT.
2009 Safari Cheetah 40 SKQ
2009 Winnebago Chalet 231CR
[SIGPIC][/SIGPIC]
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07-20-2016, 11:02 AM
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#7
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Winnebago Owner
Join Date: Jan 2008
Location: Olympia, Wa
Posts: 79
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I always figured on 1/2 gallon per hour and was never far off. That said if you are talking 90° temps running two AC's I would plan .8 per hour. At that rate 8 hours a day for 8 days would be about a half tank of fuel.
LEN
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2004 Clss C 31' Winnebgo
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07-20-2016, 08:49 PM
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#8
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Winnebago Master
Join Date: Nov 2011
Location: Full time RV'er
Posts: 1,174
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0.8 gallons per hour is the average.
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07-20-2016, 09:01 PM
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#9
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Winnebago Camper
Join Date: Jan 2014
Location: Safety Harbor, FL
Posts: 39
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Quote:
Originally Posted by D Lindy
You won't run out of fuel for the motor, the Generator can only draw the tank down to 1/4 of a tank then IT will stop, you see the generator's fuel pick-up is at the 1/4 tank level to prevent people from running their tanks empty and not being able to get fuel then.
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I always heard that however I ran my 2016 Winnie down below E on my way home last trip to see how much reserve was left (about 5 gallons) and the generators was still running!
Anyway my Onan 4000 uses about 1/2 gallon an hour at 1/2 load which is where it's at with the AC on. It's listed in the manual as previously stated.
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2016 Winnebago Vista 31be - Blue Ox Rear Track Bar - Centramatic Wheel balancers
2016 Jeep Wrangler Unlimited Rubicon Toad - Readybrute Elite Towbar
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07-20-2016, 09:07 PM
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#10
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Winnebago Camper
Join Date: Apr 2014
Location: Floyds Knobs, In.
Posts: 16
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Here are the specs on our Onan 7500. I use 1/2 gallon an hour for my estimates.
Steve
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Steve
2002 Newmar Mountain Aire 4095
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07-21-2016, 11:25 AM
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#11
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Winnie-Wise
Join Date: Jun 2010
Posts: 478
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SKP64 has it right, about 1/2 gallon an hour unless it is fully loaded. That's what I have used as a guide for several years.
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Bob, Sandi & Marmaduke the Big Pug
SW OREGON 2004 Journey 39K, 330 Cat
If towing: a 2006 Mini Cooper or 1995 Wrangler
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07-21-2016, 11:35 AM
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#12
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Winnebago Camper
Join Date: Feb 2006
Location: Northern Wisconsin
Posts: 28
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Fuel Usage
When I boondock at EAA's Camp Scholler in Oshkosh, I run the AC and generator full time. Normal current draw is around 20 Amps. I estimate I use about 8 gallons in 24 hours.
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2006 Meridian 36G
Cat C7 350, Koni Shocks
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