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#4764905 - 05/22/18 12:25 PM 91 octane E0 in 87 octane vehicle?
dlundblad Offline


Registered: 09/30/13
Posts: 10012
Loc: Indiana
Any issues with this?

I would like to do this since I am driving my Jeep less and E0 has a longer shelf life.
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03 Jeep WJ 4.0 199k Castrol Edge 10w40 HM Fram XG16
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#4764922 - 05/22/18 12:41 PM Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad]
Olas Offline


Registered: 12/11/13
Posts: 3933
Loc: Manchester, England
No issues whatsoever, potentially better mpg and better power IF you have a knock sensor and ECU that can adjust timing.
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#4764938 - 05/22/18 12:59 PM Re: 91 octane E0 in 87 octane vehicle? [Re: Olas]
WyrTwister Offline


Registered: 01/13/13
Posts: 1505
Loc: Texas
Originally Posted By: Olas
No issues whatsoever, potentially better mpg and better power IF you have a knock sensor and ECU that can adjust timing.


Yes , my thought , too . If gas mileage goes up , or performance , it may be worth the extra cost .

If not , go back to 87 octane .
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God bless

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#4765000 - 05/22/18 02:14 PM Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad]
Yah-Tah-Hey Offline


Registered: 05/26/14
Posts: 3396
Loc: Columbus,Nebraska
That's what I put in my 04 V6.

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#4765047 - 05/22/18 02:45 PM Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad]
FlyingVan Offline


Registered: 11/21/16
Posts: 123
Loc: Tennessee
Other than wasted money, no issues.
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2017 Volkswagen Jetta 1.4TSI, 30k
2016 Volkswagen Jetta 1.4TSI, 30k
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#4765104 - 05/22/18 03:26 PM Re: 91 octane E0 in 87 octane vehicle? [Re: FlyingVan]
WANG Offline


Registered: 01/08/08
Posts: 545
Loc: North Carolina
Originally Posted By: FlyingVan
Other than wasted money, no issues.


Can't really see the wasted money here...
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"Sportbikes have evolved from an axe into a scalpel.
Problem is, the average sportbike buyer is more lumberjack than surgeon." -Richard Pollock

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#4765145 - 05/22/18 03:51 PM Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad]
OilFilters Offline


Registered: 10/07/15
Posts: 209
Loc: North Carolina
In a Jeep 4.0, there will be no advantage from increased octane. It won't hurt anything, but there is no knock sensor, no increased performance...you could probably run it on 85 octane just fine.

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#4765149 - 05/22/18 03:57 PM Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad]
WANG Offline


Registered: 01/08/08
Posts: 545
Loc: North Carolina
I believe that he OP was looking at the better stability/shelf life of E0, more than the incidental octane rating of the E0 that is available to him.
_________________________
"Sportbikes have evolved from an axe into a scalpel.
Problem is, the average sportbike buyer is more lumberjack than surgeon." -Richard Pollock

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#4765188 - 05/22/18 04:29 PM Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad]
Y_K Offline


Registered: 05/29/09
Posts: 2147
Loc: WA (USA)
I also used to believe in wasted money theory, until i filled up with E0 premium and logged my highway runs. Granted, every engine responds differently, and it takes time for the computer to adapt, but in my case with 2 different NA engines it works very well. In my case, the gas station is around the corner.
Now, it's time for the esteemed gentleman from the Corn Belt to come out with the hymn of cost per mile and all the usual refrains and chorus..

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#4765282 - 05/22/18 06:17 PM Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad]
WyrTwister Offline


Registered: 01/13/13
Posts: 1505
Loc: Texas
Mom drove a 1969 Ford Galaxy 500 w/ 302 ci V-8 & carb , back in the day . She claimed it got enough better MPG's on " Ethyl " to justify the added pennies per gallon . Plus she said it ran better .
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Wyr
God bless

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#4768332 - 05/25/18 10:01 PM Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad]
Brigadier Offline


Registered: 03/11/12
Posts: 469
Loc: WA
E0 92 woke up my Colorado for sure.
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2017 Hyundai Santa FE SE, 3.3L, AWD, QSUD 5w30, STP LL Filter, LubeGard, E-0 92 octane

https://www.pure-gas.org/ << Wake up your engine!!

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#4768421 - 05/26/18 01:34 AM Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad]
OilFilters Offline


Registered: 10/07/15
Posts: 209
Loc: North Carolina
A lot of people think their car is faster after they wash it or have an oil change...

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#4779287 - 06/06/18 03:30 PM Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad]
DGXR Offline


Registered: 01/21/11
Posts: 119
Loc: California
Yes E0 fuel will stay fresh longer in a tank than E10, all else being equal. Different brands of fuel and different grades have so many additive variables that it's nearly impossible to answer the question with the given information. For a better answer, you probably should say how long your Jeep sits, how often, and in what kind of environment. Lots of experts and other experienced folks on these forums, will probably chime in after a better representation of your situation.

EDIT: Since E0 costs more, I say spend the money on fuel stabilizer instead of E0. That would be much more effective at addressing your fuel storage/freshness concerns.


Edited by DGXR (06/06/18 03:31 PM)
Edit Reason: stabilizer instead
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#4780217 - 06/07/18 02:36 PM Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad]
Broo Offline


Registered: 04/11/15
Posts: 128
Loc: Canada
This is exactly what I do.

Every vehicle I have is designed for 87 octane.

My daily driver, pickup and wife's van get 87 E10 since that's all we have available. However my 2 older vehicles are not "ethanol aware" and the only E0 available here is 91 octane for SOME brands. 91 E0 is what these two oldies get, just to avoid ethanol. I don't deplete their fuel tanks fast, so I'd rather use no ethanol in them.

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