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propane or gas for generator #4810571
07/10/18 05:56 PM
07/10/18 05:56 PM
Joined: Dec 2012
Posts: 605
Washington for now
WhyMe Offline OP
WhyMe  Offline OP
Joined: Dec 2012
Posts: 605
Washington for now
bought a new generator from costco today. replaces my old 23 year old one. this one is dual fuel. propane or gas. mine old one is gas only and i have 20 gals stored for it.

now that i have the option of propane would that be a better way to go? or is gas still the best .

Re: propane or gas for generator [Re: WhyMe] #4810576
07/10/18 06:02 PM
07/10/18 06:02 PM
Joined: Jun 2014
Posts: 1,968
IL
Vern_in_IL Offline
Vern_in_IL  Offline
Joined: Jun 2014
Posts: 1,968
IL
Propane never goes bad. Do not use the smaller tanks, use AT LEAST the hundred pound tanks at minimum, smaller tanks somehow donít put out enough pressure and it wonít run correctly.



A 20/30 pound tank will freeze up with any kind of demand worth running, and a 100lb is much cheaper to fill.

Last edited by Vern_in_IL; 07/10/18 06:05 PM.
Re: propane or gas for generator [Re: WhyMe] #4810586
07/10/18 06:18 PM
07/10/18 06:18 PM
Joined: Jun 2002
Posts: 12,515
The Motor City
Kestas Offline
Kestas  Offline
Joined: Jun 2002
Posts: 12,515
The Motor City
How much do you plan on using the generator? I use mine once every 8 years.

Re: propane or gas for generator [Re: WhyMe] #4810646
07/10/18 07:33 PM
07/10/18 07:33 PM
Joined: Jun 2003
Posts: 33,073
ME
eljefino Offline
eljefino  Offline
Joined: Jun 2003
Posts: 33,073
ME
Even if you normally run on gasoline, finish it off with propane so it'll completely dry out the carburetor.

In the summer at least you could throw a 20lb bottle in a washtub full of tepid water to keep it from freezing up.

Liquid propane has somewhat less BTUs than gasoline per unit. I could get a 20 lb fill, which is 4.3 gallons, for $10.75 from BJs wholesale. That's $2.50 a gallon, a little cheaper than gasoline, for a little less power. But it's nice that I don't have a smelly gas can in my car. BJs claims DOT regs don't let citizens transport more than 90 lbs at a time, which to me, seems generous.

I have an aftermarket propane carb on my generator and several 20lb bottles. Will report how it works under extended heavy use.

Re: propane or gas for generator [Re: WhyMe] #4810659
07/10/18 07:48 PM
07/10/18 07:48 PM
Joined: Jun 2011
Posts: 619
Florida
chainblu Offline
chainblu  Offline
Joined: Jun 2011
Posts: 619
Florida
If I could do it again, I'd go with a dual fuel generator. During the aftermath of the last hurricane that came thru here, there was no gasoline to be found. However, you could get your propane tank refilled at several places.

Re: propane or gas for generator [Re: WhyMe] #4810670
07/10/18 07:57 PM
07/10/18 07:57 PM
Joined: Jul 2013
Posts: 2,207
Outer Banks, NC
NormanBuntz Offline
NormanBuntz  Offline
Joined: Jul 2013
Posts: 2,207
Outer Banks, NC
What brand did you buy? If it's a Generac, dual fuel could translate to twice as many things to go wrong. My 16kw standby Generac is 12 years old and is being held together by wire, zip ties and pressure treated wood.

For your original question, most people feel propane is safer than gasoline storage. Good luck with your purchase.


2017 Honda Odyssey SE, 15K
2013 Honda Accord LX, 58K
2007 Honda Ridgeline RTS, 87K
2007 Infiniti M35, 106K
Re: propane or gas for generator [Re: WhyMe] #4810680
07/10/18 08:01 PM
07/10/18 08:01 PM
Joined: Jun 2014
Posts: 1,968
IL
Vern_in_IL Offline
Vern_in_IL  Offline
Joined: Jun 2014
Posts: 1,968
IL
Quote:
Even if you normally run on gasoline, finish it off with propane so it'll completely dry out the carburetor.


cool

Re: propane or gas for generator [Re: WhyMe] #4810684
07/10/18 08:02 PM
07/10/18 08:02 PM
Joined: Mar 2010
Posts: 654
NY
mx5miata Offline
mx5miata  Offline
Joined: Mar 2010
Posts: 654
NY
Propane might be cleaner burning not as efficient or power output not 100% sure


NAPA FULL SYNTHETIC 0w20 Partsplus oil filter
Wix air filter
Re: propane or gas for generator [Re: NormanBuntz] #4810758
07/10/18 09:34 PM
07/10/18 09:34 PM
Joined: Dec 2012
Posts: 605
Washington for now
WhyMe Offline OP
WhyMe  Offline OP
Joined: Dec 2012
Posts: 605
Washington for now
Originally Posted By: NormanBuntz
What brand did you buy? If it's a Generac, dual fuel could translate to twice as many things to go wrong. My 16kw standby Generac is 12 years old and is being held together by wire, zip ties and pressure treated wood.

For your original question, most people feel propane is safer than gasoline storage. Good luck with your purchase.


Bought the champion brand. was on sale for 549.00 for the 7k model. seems to run pretty good. quieter than my old one. 3 year warranty

Re: propane or gas for generator [Re: mx5miata] #4810767
07/10/18 09:42 PM
07/10/18 09:42 PM
Joined: Dec 2016
Posts: 6,226
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,226
Waco, TX
Originally Posted By: mx5miata
Propane might be cleaner burning not as efficient or power output not 100% sure


Truth - - unless the compression ratio is raised to take advantage of the high octane,

Power will be down only a little bit - - - BUT
You will burn a LOT more gallons of propane than gasoline.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: propane or gas for generator [Re: WhyMe] #4810798
07/10/18 10:26 PM
07/10/18 10:26 PM
Joined: Mar 2004
Posts: 20,748
Upstate NY
Donald Offline
Donald  Offline
Joined: Mar 2004
Posts: 20,748
Upstate NY
Propane has a vaporization rate from each size tank. You need to find how many BTU of propane your generator needs per hour and that will tell you the minimum tank size for a given temp. What might be fine in the summer may not work in the winter.

A 20 lb tank is good for a test, but not to run it to power anything. Minimum of 100 lb tanks as you can bring them places to get filled. Better to get a tank that is 100 gal. Or bury a 500 or 1000 gal.

Never rent propane tanks.


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: propane or gas for generator [Re: WhyMe] #4810885
07/11/18 01:33 AM
07/11/18 01:33 AM
Joined: Dec 2012
Posts: 605
Washington for now
WhyMe Offline OP
WhyMe  Offline OP
Joined: Dec 2012
Posts: 605
Washington for now
have not bought propane in a while. exchange seems to be about $21 and refill about $4 a gallon. with less btu per gallon and higher price , it seems that gas is still the way to go?

Re: propane or gas for generator [Re: WhyMe] #4810895
07/11/18 02:01 AM
07/11/18 02:01 AM
Joined: May 2013
Posts: 2,093
Saskatchewan, Canada
Johnny2Bad Offline
Johnny2Bad  Offline
Joined: May 2013
Posts: 2,093
Saskatchewan, Canada
It's very location dependent, but Propane should be cheaper than Gasoline.

It has a little less energy, but not a huge difference.

You can buy propane in an emergency, as the refill process uses stored pressure, not electric pumps, to fill. You can't buy gas if there is no electricity.

Propane stores much better, essentially forever. Gas goes bad after some months, I would say 6 maximum but others say 12 months.

Propane gells at low temperatures, making it useless (no pressure). You can heat the tank to turn it back into a gaseous state but that can be dangerous if you don't know how to do it. Some say the critical temperature is -20F but in my experience it's closer to -35F. However it will have less pressure as it gets close to that temperature. 0F is fine though.

Agree on avoiding the BBQ-sized tanks. May as well consider using the same cylinder for the BBQ though. If you do something like that, make sure the generator is far enough away from the home to avoid carbon monoxide entry to the living space.


'57 FL Straight 50 wt
'90 Miata 1.8L w/Rotrex Supercharger [Mobil1 0W-40]
'96 Ram 1500 [3.7L Mobil1 0W-20 / 1L 15W-50]
'01 PT Cruiser [Mobil1 0W-40]
Re: propane or gas for generator [Re: WhyMe] #4810908
07/11/18 02:45 AM
07/11/18 02:45 AM
Joined: Sep 2007
Posts: 313
northern NY
Driz Offline
Driz  Offline
Joined: Sep 2007
Posts: 313
northern NY
Only thing with gas is remembering to change it out . Then thereís the dreaded Ethanol monster. It especially corrodes and plugs carbs on gen sets because they sit so much. Donít ever use it in a Genny unless youíre actually simply burning it through at the time. Itís ok for that though. Just donít leave it sitting ? Also no matter which you use put a fuel shut off and mini filter on the line. Theyíre cheap .
Gas, no opinion. I used to drive a 350 Chevy with a 2 bbl carb and a switching rig. Some sort of gov study trial rig 1070 Chevy half tons even had air bags right down to the exact same label on the visors in later they drove as normal burned more propane than gas and did stink if you sat idling long. Also tended to give one a headache if you sat idling long.

Re: propane or gas for generator [Re: WhyMe] #4810996
07/11/18 07:59 AM
07/11/18 07:59 AM
Joined: Dec 2004
Posts: 9,318
1/2 hr N.E. of Detroit
Triple_Se7en Offline
Triple_Se7en  Offline
Joined: Dec 2004
Posts: 9,318
1/2 hr N.E. of Detroit
New-age generators use natural gas.


She's the only sister-in-law I have. But she's not my favorite.
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