Home » Public Forums » GMCnet » onan fuel consumption
| onan fuel consumption [message #346990] |
Wed, 28 August 2019 19:29  |
skip2
Messages: 544
Registered: September 2011
Location: Winter Haven,FL (center o...
Karma: 3
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Evening all,
I know this topic has probably been hit a few times but could not find a definitive answer in the search. Since my onan will be used if we loose power with Dorian coming our way I'm curious what to expect in consumption with say a medium load like one roof AC or the lights and frig and tv in my house running off of it. It really seems to be very little when using it going down the road. Any numbers would be welcome.
Skip Hartline
74 Canyon Lands, FiTech,
3.7 FD LSD, Manny Tranny,
Springfield Distributor,
2001 Chevy Tracker Ragtop Towd
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| Re: onan fuel consumption [message #346998 is a reply to message #346990] |
Wed, 28 August 2019 21:29  |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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From total way back memory, the number .8 gal /hr on a 6kW at 50% load is I what I remember. Based on Matt's 4k numbers that seems plausible.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] onan fuel consumption [message #347001 is a reply to message #346993] |
Wed, 28 August 2019 21:40 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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I always figured a gallon or less per hour with my 6000 watt Onan.
Emery Stora
> On Aug 28, 2019, at 6:45 PM, Matt Colie via Gmclist wrote:
>
> skip2 wrote on Wed, 28 August 2019 20:29
>> Evening all,
>>
>> I know this topic has probably been hit a few times but could not find a definitive answer in the search. Since my onan will be used if we loose
>> power with Dorian coming our way I'm curious what to expect in consumption with say a medium load like one roof AC or the lights and frig and tv in
>> my house running off of it. It really seems to be very little when using it going down the road. Any numbers would be welcome.
>>
>> Skip Hartline
>
> Skip,
>
> The actual numbers are in the book out in my coach (123' away, but it is the end of a long day) and as I recall, my BF(4kW) ran the 15.5kBTU carrier
> for 0.46 gallons per hour. Unloaded it burned 0.23GPH.
>
> I know that this is real close and I will correct it tomorrow if it matters.
>
> Matt
>
> --
> Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> Electronically Controlled Quiet Engine Cooling Fan
> OE Rear Drum Brakes with Applied Control Arms
> SE Michigan - Twixt A2 and Detroit
>
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| Re: [GMCnet] onan fuel consumption [message #347007 is a reply to message #347003] |
Thu, 29 August 2019 04:54 |
skip2
Messages: 544
Registered: September 2011
Location: Winter Haven,FL (center o...
Karma: 3
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Yep I agree, I installed the pertronics kit I got from you a while back and definitely made a big difference.
Skip Hartline
74 Canyon Lands, FiTech,
3.7 FD LSD, Manny Tranny,
Springfield Distributor,
2001 Chevy Tracker Ragtop Towd
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| Re: onan fuel consumption [message #347015 is a reply to message #346990] |
Thu, 29 August 2019 07:51 |
bobby5832708
Messages: 237
Registered: November 2006
Location: Winter Springs FL
Karma: 3
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Years ago I did a consumption test on the stock Onan 6K in my GMC. Using a somewhat precisely measured quart of whatever gasoline I had in the mowers gas cans, I warmed up the Onan and then I put the fuel supply hose from the Onan's fuel pump into the measured fuel container and, using a timer app, measured the time until the quart was gone.
If I remember correctly, the consumption was 1/2 gallon/hour running one A/C and 3/4 gallon/hour running two A/C's.
I tried to find my original thread on this subject but it apparently was so long ago that it's gone from the GMCNet archives.
Bob Heller
2017 Winnebago 29VE
Winter Springs FL
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| Re: onan fuel consumption [message #347069 is a reply to message #346990] |
Thu, 29 August 2019 19:53 |
skip2
Messages: 544
Registered: September 2011
Location: Winter Haven,FL (center o...
Karma: 3
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Senior Member |
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Thank you all for your replies.
Skip Hartline
74 Canyon Lands, FiTech,
3.7 FD LSD, Manny Tranny,
Springfield Distributor,
2001 Chevy Tracker Ragtop Towd
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| Re: [GMCnet] onan fuel consumption [message #347119 is a reply to message #347069] |
Fri, 30 August 2019 16:45 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Bob,
A good test, but not that close as we do not know how often the compressors
were kicking on,etc.
Just a BS that was drilled into our head in engineering.
On Thu, Aug 29, 2019 at 5:54 PM Skip Hartline via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Thank you all for your replies.
>
> Skip Hartline
> --
> 74 Canyon Lands, FiTech,
> 3.7 FD, Manny Tranny,
> Springfield Distributor,
> 2001 Chevy Tracker Ragtop Towd
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] onan fuel consumption [message #347123 is a reply to message #347119] |
Fri, 30 August 2019 19:06 |
bobby5832708
Messages: 237
Registered: November 2006
Location: Winter Springs FL
Karma: 3
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Senior Member |
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"Bob,
A good test, but not that close as we do not know how often the compressors
were kicking on,etc.
Just a BS that was drilled into our head in engineering."
Jim,
Central Florida in the summertime is hot and really humid, the compressors never stopped. I left the GMC door open and the stats on full cold trying to get maximum fuel consumption. What I should have also done that day is a no-load test to see how much fuel the Onan uses just to keep itself spinning. That's a project for another day.
Bob Heller
2017 Winnebago 29VE
Winter Springs FL
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| Re: [GMCnet] onan fuel consumption [message #347126 is a reply to message #347123] |
Fri, 30 August 2019 21:42 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Ok, now that I know. thanks.
On Fri, Aug 30, 2019 at 5:06 PM Bob Heller via Gmclist <
gmclist@list.gmcnet.org> wrote:
> "Bob,
> A good test, but not that close as we do not know how often the compressors
> were kicking on,etc.
> Just a BS that was drilled into our head in engineering."
>
>
> Jim,
>
> Central Florida in the summertime is hot and really humid, the compressors
> never stopped. I left the GMC door open and the stats on full cold trying
> to get maximum fuel consumption. What I should have also done that day is
> a no-load test to see how much fuel the Onan uses just to keep itself
> spinning. That's a project for another day.
>
>
>
> --
> Bob Heller
> 1974 X-Canyonlands 26ft
> Original 455 except for timing chain, Rockwell intake, valve covers.
> Ferrara air bags. 147k miles.
> Winter Springs FL
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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