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08-15-2015, 11:23 AM
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#1
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Senior Member
Join Date: Aug 2013
Location: Memphis
Posts: 1,616
Michigan
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Generator fuel economy
Just curious if anyone has determined fuel ecomony on the 5500 Onan running two AC units. My generator gas gage doesn't work so curious.
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2019 Ram 3500 Limited w/ Max Tow pkg
2005 Cardinal 33LX
2014-3950, Full Paint, 17.5" tires, 370W solar, 3100W Magnum inverter w/ AGS, 7500w diesel generator, Micro-Air Easy Start 364 (x3) SOLD!
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08-15-2015, 01:04 PM
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#2
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Senior Member
Join Date: Nov 2013
Location: Fredericksburg
Posts: 218
Virginia
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My best guess the last time we were out using the Generator all day and night, we averaged about a .625 of a gallon an hour. Obviously the AC's were running more during the day but that was a pretty close average.
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Phil
2014 Voltage 3950 Epic III
2016 Ram 3500 Diesel 4wd, Long Horn Dually long bed
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08-16-2015, 04:07 AM
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#3
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Senior Member
Join Date: Mar 2014
Location: Midland
Posts: 606
Texas
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Originally posted April 2014...
"I was pleasantly surprised this morning fueling up for this weekend.
My generator tank took 18 gallons to refill after running two AC's, probably averaging a 50% load, for 36 hours last weekend... 1/2 gallon per hour.
The 5500 Onan in my previous TH used closer to 7/10th's a gallon an hour with two AC's running and almost a gallon an hour in 100+ degree temps.
I'm hoping the fuel consumption will improve after break in."
My 1/2 a gallon per hour burn last year was in 80 to 90 degree weather, I think the .625 would be a better estimate in 90 to 100 degree temps.
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Mike & Helen
2014 Voltage 3895 EPIC III
2013 Ford F350 CC DRW FX4
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08-16-2015, 07:49 PM
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#4
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Senior Member
Join Date: Nov 2013
Location: Fredericksburg
Posts: 218
Virginia
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Yes, It was in the 90's and I was in Atlanta Georgia. Would agree with Hornedtoad!
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Phil
2014 Voltage 3950 Epic III
2016 Ram 3500 Diesel 4wd, Long Horn Dually long bed
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08-17-2015, 10:44 AM
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#5
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Senior Member
Join Date: Aug 2013
Location: Memphis
Posts: 1,616
Michigan
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Thanks every one. We ran the generator for the better part of the weekend with no issues. Have not calculated fuel usage, but had plenty to make it thru. I ask merely because my generator fuel "gage" has never worked from day one.
__________________
2019 Ram 3500 Limited w/ Max Tow pkg
2005 Cardinal 33LX
2014-3950, Full Paint, 17.5" tires, 370W solar, 3100W Magnum inverter w/ AGS, 7500w diesel generator, Micro-Air Easy Start 364 (x3) SOLD!
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08-17-2015, 11:00 AM
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#6
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Senior Member
Join Date: Jan 2015
Location: Roselle
Posts: 1,292
Illinois
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Speaking of fuel, I want to know what I should do with my non-generator fuel tank. We don't boondock, rarely using the generator; mainly just "exercising" it two hours monthly. I treat that fuel, however I have never put fuel in the "toy" tank. I could put fuel in it, and then pump it to the generator tank, but It would take me over a year to use the 70 or 80 gallons. Is it okay to just leave it empty or what? Recommendations? Thanks.
Rusty
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2015 Black F-350 Platinum Diesel Dually Crew Cab
2019 Riverstone Legacy 38MB (Full Paint/All Options)
2015 Voltage 3990 (Full Paint, All Options) Sold 6/18
2005 Harley Ultra Classic w/too many miles
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08-17-2015, 11:08 AM
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#7
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Senior Member
Join Date: Aug 2013
Location: Memphis
Posts: 1,616
Michigan
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I can't see anything wrong with that as long as it is kept dry to avoid any rust from developing
__________________
2019 Ram 3500 Limited w/ Max Tow pkg
2005 Cardinal 33LX
2014-3950, Full Paint, 17.5" tires, 370W solar, 3100W Magnum inverter w/ AGS, 7500w diesel generator, Micro-Air Easy Start 364 (x3) SOLD!
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08-17-2015, 03:14 PM
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#8
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Senior Member
Join Date: Mar 2014
Location: Desert Hot Springs
Posts: 1,761
California
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Quote:
Originally Posted by lcv800
Speaking of fuel, I want to know what I should do with my non-generator fuel tank. We don't boondock, rarely using the generator; mainly just "exercising" it two hours monthly. I treat that fuel, however I have never put fuel in the "toy" tank. I could put fuel in it, and then pump it to the generator tank, but It would take me over a year to use the 70 or 80 gallons. Is it okay to just leave it empty or what? Recommendations? Thanks.
Rusty
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I use that tank as my spare fuel for my F-350 tow vehicle. I removed the neck & ground it out to except the larger diesel nozzle.
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Mike
2002 42' Monaco Signature Triple Crown tow 2014 F-150
2014 Voltage V3605 Sold 5/3/17
2012 F-350 6.7l CC 4X4, Sold 10/10/17
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08-17-2015, 04:29 PM
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#9
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Senior Member
Join Date: Dec 2014
Location: Minden
Posts: 708
Nevada
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Mike, I like that, I didn't even think of changing it to Diesel....
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Rich and Angela, Lab Dogs, Ruben, Ace
2015 Voltage V3895
2006 Lance Truck Camper 1181
2019 GMC 3500HD 4X4 CC DRW LB Bags Husky 26K Hitch Can Am Commander 1000 ATV
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08-17-2015, 07:10 PM
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#10
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Member
Join Date: Sep 2013
Location: Annandale
Posts: 35
Virginia
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Quote:
Originally Posted by donzinger
Thanks every one. We ran the generator for the better part of the weekend with no issues. Have not calculated fuel usage, but had plenty to make it thru. I ask merely because my generator fuel "gage" has never worked from day one.
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Which gauge are you looking at, the one outside or inside?
I use about 4-5 gallons every 12 hours depending on temperature, altitude and load.
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2011 HD Chevrolet Crew Cab Dually w/Duramax
2014 Voltage 3905 Epic III, full body paint
1999 FLHR, Raptor 700R, TT-230, TT-125LE
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08-17-2015, 07:20 PM
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#11
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Senior Member
Join Date: Aug 2013
Location: Memphis
Posts: 1,616
Michigan
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My outside one for the forward tank works fine. Generator gage inside has never worked. When took in for warranty was told that General RV didn't have the capability to drain amd drop the tank and to take it to Onan. After telling them Onan didn't install the tank and that my teenage daughter could drop the tank in my driveway I left. Using a camera it is connected. I plan to drop the tank to troubleshoot at the end of the season
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__________________
2019 Ram 3500 Limited w/ Max Tow pkg
2005 Cardinal 33LX
2014-3950, Full Paint, 17.5" tires, 370W solar, 3100W Magnum inverter w/ AGS, 7500w diesel generator, Micro-Air Easy Start 364 (x3) SOLD!
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