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Treating Ethanol Free Gas? #5277192 11/25/19 04:33 PM
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Astro_Guy Offline OP
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I've been treating my OPE Ethanol laced fuel with Stabil or Stabil Marine 360 for several years now. Recently a nearby Wawa started selling 89 Octane ethanol free fuel, so I stopped in tonight and bought some. Much to my surprise, it cost only 4 cents per gallon more than the usual 89 Octane mid-grade. I plan to use this fuel in the "standby" toys, meaning generators, snow blowers, and anything else you hope you never have to use. If it were you, would you treat it or just let it go?

p.s. Bought a battery operated transfer pump yesterday at Harbor Freight, making it really easy to remove stale fuel from these toys.


'01 Volvo V70XC, 247k, 5W-30 M1 EP
'16 Accord, 45k, 0W-20 M1 EP
Re: Treating Ethanol Free Gas? [Re: Astro_Guy] #5277196 11/25/19 04:37 PM
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eljefino Offline
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Treat it because what if you didn't, would you hate yourself?

I'd try and give that station some business with my regular car, too, just to encourage them to keep selling this.

Re: Treating Ethanol Free Gas? [Re: eljefino] #5277202 11/25/19 04:43 PM
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Astro_Guy Offline OP
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Originally Posted by eljefino
I'd try and give that station some business with my regular car, too, just to encourage them to keep selling this.
I was a little surprised at the price because the Sunoco I stop at in Phillip, ME, charges closer to $4/gal for Ethanol free gas.

Re: Treating Ethanol Free Gas? [Re: Astro_Guy] #5277209 11/25/19 05:03 PM
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RoadDukie Offline
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My method is that IF gas is going into gas cans, it gets treated. I only buy ethenol free gas for OPE or my motorcycles. In decades of doing it like this, I've never had anything fail to start.


1998 Mercedes S500
2003 Corvette Roadster
2007 Chevrolet Avalanche
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Re: Treating Ethanol Free Gas? [Re: Astro_Guy] #5277212 11/25/19 05:05 PM
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wag123 Offline
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It's the gas that gets old and goes bad, not the alcohol, so yes, treat the E0 gas. You should still buy only what you will use up in 6 months or less (best practice, even if treated) and you still need to run your machinery dry before storage.

Re: Treating Ethanol Free Gas? [Re: Astro_Guy] #5277222 11/25/19 05:20 PM
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Y_K Offline
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Not an argument in favour of or against something, but I had an old Protege with 1.8 DOHC sitting for 6 years straight that started right up with no treatment. The battery was out on a charger all that time though, the gas was what was in the tank before I anchored it. Regular gasohol; make your own mind, of course.


Re: Treating Ethanol Free Gas? [Re: wag123] #5277232 11/25/19 05:32 PM
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Astro_Guy Offline OP
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Originally Posted by wag123
It's the gas that gets old and goes bad, not the alcohol, so yes, treat the E0 gas. You should still buy only what you will use up in 6 months or less (best practice, even if treated) and you still need to run your machinery dry before storage.
Agreed, but Stabil 360 is supposed to maintain a positive vapor pressure and thus keep water vapor from entering the fuel tank. I have some Stabil 360 on hand and will dose up this 5 gallons prior to using it.

Re: Treating Ethanol Free Gas? [Re: Astro_Guy] #5277316 11/25/19 07:41 PM
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jakewells Offline
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I treat ethanol free with PRI-G and fuel doesn't sour even after 18 months in equipment i recommend it.


1996 Chevy 1500 4.3 V6. Harvest King 5W40 Fram XG3980 oil filter
Pennzoil sycromesh >> transmission
Shell rotella nitrite free ELC >> radiator
Shell Spirax HD 80W-90 >> rear axle


Re: Treating Ethanol Free Gas? [Re: Astro_Guy] #5277339 11/25/19 08:15 PM
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Mtnbikerva1 Offline
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PROJECT FARM on YouTube tested a number of ethanol gasoline snake oils... and if I remember correctly thyis what they proved to be.
Ethanol gas is just GARBAGE!
Especially in non fuel injected systems. Most lawn equipment, boats, planes, cars, motorcycles with carburetors, ethanol = pain and suffering eventually.

Last edited by Mtnbikerva1; 11/25/19 08:18 PM.
Re: Treating Ethanol Free Gas? [Re: Astro_Guy] #5277386 11/25/19 09:07 PM
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IronMaidenRules Offline
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Originally Posted by Astro_Guy
Originally Posted by eljefino
I'd try and give that station some business with my regular car, too, just to encourage them to keep selling this.
I was a little surprised at the price because the Sunoco I stop at in Phillip, ME, charges closer to $4/gal for Ethanol free gas.

Wow, that is really gougey! Phillips is literally in the middle of nowhere, though. I just was there this past spring for the first time. Here in Bangor, regular has been about $2.49 for a long time and at the few stations that have ethanol free, that's like $2.90ish? I only put ethanol free in my yard equipment and my fun car, things that sit for long periods.


'04 Mazda6 V6 wagon 5-spd.
'88 Dodge Daytona 2.5 5-spd.
'95 Ford Taurus SHO 5-spd. SOLD
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Re: Treating Ethanol Free Gas? [Re: jakewells] #5277722 11/26/19 08:24 AM
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Bonz Offline
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Originally Posted by jakewells
I treat ethanol free with PRI-G and fuel doesn't sour even after 18 months in equipment i recommend it.


What does gasoline go into and not get used for 18 months?

Re: Treating Ethanol Free Gas? [Re: Bonz] #5277814 11/26/19 10:21 AM
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jakewells Offline
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Originally Posted by Bonz
Originally Posted by jakewells
I treat ethanol free with PRI-G and fuel doesn't sour even after 18 months in equipment i recommend it.


What does gasoline go into and not get used for 18 months?


1952 ford 8n split in half for transmission and rear axle overhaul.


1996 Chevy 1500 4.3 V6. Harvest King 5W40 Fram XG3980 oil filter
Pennzoil sycromesh >> transmission
Shell rotella nitrite free ELC >> radiator
Shell Spirax HD 80W-90 >> rear axle


Re: Treating Ethanol Free Gas? [Re: Astro_Guy] #5278005 11/26/19 01:53 PM
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Bonz Offline
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I looked up PRI-G, says one of the functions is that it restores old gas to freshness.

Sounds like it worked well for you, never heard of it until I looked it up but looks like it's sold many places.

Re: Treating Ethanol Free Gas? [Re: eljefino] #5278008 11/26/19 01:56 PM
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Duffyjr Offline
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Originally Posted by eljefino
Treat it because what if you didn't, would you hate yourself?

I'd try and give that station some business with my regular car, too, just to encourage them to keep selling this.

Absolutely, been a few years since the spread was .04 cents here, now it's .35 cents, just can't justify using it in my vehicles but still use it in OPE along with red sta-bil and a shot of Star Tron to keep things clean.

Last edited by Duffyjr; 11/26/19 01:57 PM.

89 GMC Sierra Advanced 5w30/51036 Wix
08 Lucerne CX Advanced 5w30/1040 Gold
18 Toro Super Recycler VWB SAE 30
Re: Treating Ethanol Free Gas? [Re: Bonz] #5278032 11/26/19 02:28 PM
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kschachn Offline
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Originally Posted by Bonz
I looked up PRI-G, says one of the functions is that it restores old gas to freshness.

For the most part that’s just not possible. Once the more volatile components have evaporated there’s no way to put them back, plus you can’t reverse oxidative reactions that have occurred. Those claims are false other than possibly sequestering some water that may have ingressed the tank. Making such claims would cause me to doubt anything else that company might say.


1994 BMW 530i, 251K
1996 Honda Accord, 280K
1999 Toyota Sienna, 428K
2000 Toyota ECHO, 284K
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