EPDM Coatings
rvupgradestore.com Composet Products Custom Yacht Interiors

Author Topic: Is Ethanol Gas Aging In The Tank An Issue In RV'ing?  (Read 319 times)

NCSU Dad

  • ---
  • Posts: 39
  • OBX NC
Is Ethanol Gas Aging In The Tank An Issue In RV'ing?
« on: October 28, 2017, 01:45:13 PM »
From personal boating experience I've learned the hard way how ethanol gasoline wreaked havoc on my outboard. If it is fresh no problem. Even stabilized gas sitting in the tank for months is bad.

Do motorhomes that see infrequent usage suffer from this problem?

Thanks!

kdbgoat

  • ---
  • Posts: 4115
Re: Is Ethanol Gas Aging In The Tank An Issue In RV'ing?
« Reply #1 on: October 28, 2017, 02:43:05 PM »
Some may to a point, but the generator is what usually has issues with old gas.
I know you believe you understand what you think I said,
But I am not sure you realize what you heard is not what I meant


2016 Leprechaun 319DS

WILDEBILL308

  • ---
  • Posts: 2410
Re: Is Ethanol Gas Aging In The Tank An Issue In RV'ing?
« Reply #2 on: October 28, 2017, 03:49:47 PM »
If you are storing for the winter a double dose+ of stabilizer will help. Run the generator to get treated gas through the generator. It is recommended to exercise the generator monthly under 1/2-3/4  load fore 2 hours. This will reduce the "bad gas" problems in the generator.
Bill
2003 Bounder 38N
300 HP 5.9 Cummins
Allison 3000MH Trans.
Towing 2014 Honda CRV
Home base Fort Worth, Texas
A man who carries a cat by the tail learns something he can learn in no other way.
-Mark Twain-

John From Detroit

  • ---
  • Posts: 19723
  • ^My New Home^
    • Diabetics Forum
Re: Is Ethanol Gas Aging In The Tank An Issue In RV'ing?
« Reply #3 on: October 28, 2017, 05:24:57 PM »
I have read about Outboard engines. Including the results of tests run by Mercury Outboards. And heard of other small (lawn mower type) engine issues.

Here is my experience
IN June 2014 I drove to GA for the birth of my grandson (#1 Grandchild) A month and a birth later I left, Intending to fill up when I got to a gas station......... The engine blew due to oil issues caused by a road hazard (insurance paid)

I estimated the amount of fuel in the tank and added Seafoam

IN March of this year (3 years later) I called the tow truck...  IN the interm I did run the Genrator roughly once a month for the requisite 1/2 hour or more under load. (Usually more) and I had to add Gasoline from time to time since I only had a half tank at Blewie.

But The ONLY generator issue turned out to be a stuck choke and pre-dates Blewie. (Found about it 3 weeks ago when I had the oil changed. FIrst time I PAID to have it changed and he spotted the stuck chock been sticking for years.. Works, just takes a bit to open)

Main engine... We got the 2005 engine out and lifted in an 2004 with a few 2005 parts attached.

Took 3 tries to start (Not unexpected) and very loud valve clatter (likewise) and one other noise I could not hear over the valve caltter
Found the other noise and fixed it (2nd fire up)
Fired it up to confirm fixed and PURRRRRRRRR

Has been PURRRRRRR ever sincem, save when it's ROAR (And an 8.1 can really ROAR under load)


Side story: Old man parked long term in the RF park where I was broke down.. He was went to hospital and then to extended care and the word is not returning to RV... Family called and ask it be moved to storage. Batteries FLAT and I mean FLAT, might as well not even be there. Between myself and two helpers we got the slides in, And the Park owner got a new chassis battery.. I installed it and he ask me to move it. This rig has not moved in at least 5 years.

Fired right up. Just like showroom, Drove nicely.. Oh yes there were a few "long term parked" issues (One jack did not want to retract had to help it up) but no fuel related issues.

Again though it's the 8.1 Workhorse   Did not try the generator.
Nothing adds excitement like something that is none of your business
My Home is where I park it.

keymastr

  • ---
  • Posts: 533
Re: Is Ethanol Gas Aging In The Tank An Issue In RV'ing?
« Reply #4 on: October 28, 2017, 08:11:21 PM »
Boat fuel systems are vented to the atmosphere, auto and RV systems are not. In a boat the change in temp every day makes the fuel expand pushing fumes out, including some very important vapors. Then at night the fuel cools and contracts sucking damp cool air into the tank which adds water vapor. Double whammy. I would suggest that you add enough fresh gas to dilute any that has been sitting for more than 6 months in any engine since it will have certainly lost some octane, among other things.

skydivemark

  • ---
  • Posts: 34
Re: Is Ethanol Gas Aging In The Tank An Issue In RV'ing?
« Reply #5 on: October 29, 2017, 09:25:59 AM »
Whenever we return from a trip I refill the gas tank within a week or 2 and treat the gas with stabil at about 1-1.5 oz per 5 gal even if we plan another trip within a month. Then I run the gen for an hour or so and take the coach for a ride around the block (around our block is about a 12 miles). Never have problems with gas gumming up or turning to varnish. We've only been RV'ing about 8 years so I'm sure others with more experience will have advice to add.
2015 Thor Four Winds 31L
Clermont, FL

 

Hosted by Over The Network