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91 octane E0 in 87 octane vehicle? #4764905
05/22/18 11:25 AM
05/22/18 11:25 AM
Joined: Sep 2013
Posts: 10,771
Indiana
dlundblad Offline OP
dlundblad  Offline OP
Joined: Sep 2013
Posts: 10,771
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.


03 Jeep WJ 4.0 202k Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 153k Synpower 5w30 Supertech ST3980 (Ecore)

Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad] #4764922
05/22/18 11:41 AM
05/22/18 11:41 AM
Joined: Dec 2013
Posts: 3,989
Manchester, England
Olas Offline
Olas  Offline
Joined: Dec 2013
Posts: 3,989
Manchester, England
No issues whatsoever, potentially better mpg and better power IF you have a knock sensor and ECU that can adjust timing.


Cable ties should hold it
Re: 91 octane E0 in 87 octane vehicle? [Re: Olas] #4764938
05/22/18 11:59 AM
05/22/18 11:59 AM
Joined: Jan 2013
Posts: 2,256
Texas
WyrTwister Offline
WyrTwister  Offline
Joined: Jan 2013
Posts: 2,256
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 .


Wyr
God bless
Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad] #4765000
05/22/18 01:14 PM
05/22/18 01:14 PM
Joined: May 2014
Posts: 3,873
Columbus,Nebraska
Yah-Tah-Hey Offline
Yah-Tah-Hey  Offline
Joined: May 2014
Posts: 3,873
Columbus,Nebraska
That's what I put in my 04 V6.

Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad] #4765047
05/22/18 01:45 PM
05/22/18 01:45 PM
Joined: Nov 2016
Posts: 174
Tennessee
FlyingVan Offline
FlyingVan  Offline
Joined: Nov 2016
Posts: 174
Tennessee
Other than wasted money, no issues.


2015 Mercedes Sprinter, 2.1 4cyl diesel, 42k
2011 Volkswagen Jetta Sportwagen TDI, 100k
2004 Dodge Sprinter 2.7 5cyl diesel,779k
Except for chainsaws and lawnmowers, no sparkplugs needed in my stable.
Re: 91 octane E0 in 87 octane vehicle? [Re: FlyingVan] #4765104
05/22/18 02:26 PM
05/22/18 02:26 PM
Joined: Jan 2008
Posts: 546
North Carolina
WANG Offline
WANG  Offline
Joined: Jan 2008
Posts: 546
North Carolina
Originally Posted By: FlyingVan
Other than wasted money, no issues.


Can't really see the wasted money here...


"Sportbikes have evolved from an axe into a scalpel.
Problem is, the average sportbike buyer is more lumberjack than surgeon." -Richard Pollock
Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad] #4765145
05/22/18 02:51 PM
05/22/18 02:51 PM
Joined: Oct 2015
Posts: 308
North Carolina
OilFilters Offline
OilFilters  Offline
Joined: Oct 2015
Posts: 308
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.

Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad] #4765149
05/22/18 02:57 PM
05/22/18 02:57 PM
Joined: Jan 2008
Posts: 546
North Carolina
WANG Offline
WANG  Offline
Joined: Jan 2008
Posts: 546
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
Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad] #4765188
05/22/18 03:29 PM
05/22/18 03:29 PM
Joined: May 2009
Posts: 2,339
WA (USA)
Y_K Offline
Y_K  Offline
Joined: May 2009
Posts: 2,339
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..

Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad] #4765282
05/22/18 05:17 PM
05/22/18 05:17 PM
Joined: Jan 2013
Posts: 2,256
Texas
WyrTwister Offline
WyrTwister  Offline
Joined: Jan 2013
Posts: 2,256
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 .


Wyr
God bless
Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad] #4768332
05/25/18 09:01 PM
05/25/18 09:01 PM
Joined: Mar 2012
Posts: 916
WA
Brigadier Offline
Brigadier  Offline
Joined: Mar 2012
Posts: 916
WA
E0 92 woke up my Colorado for sure.


2017 Hyundai Santa Fe SE, 3.3L, AWD, QSUD 5w30, OEM filter, Hy-per Lube ZRA

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

Where the stars and stripes and the eagle fly
Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad] #4768421
05/26/18 12:34 AM
05/26/18 12:34 AM
Joined: Oct 2015
Posts: 308
North Carolina
OilFilters Offline
OilFilters  Offline
Joined: Oct 2015
Posts: 308
North Carolina
A lot of people think their car is faster after they wash it or have an oil change...

Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad] #4779287
06/06/18 02:30 PM
06/06/18 02:30 PM
Joined: Jan 2011
Posts: 280
California
DGXR Offline
DGXR  Offline
Joined: Jan 2011
Posts: 280
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.

Last edited by DGXR; 06/06/18 02:31 PM. Reason: stabilizer instead

1995 Corvette coupe LT1 6-speed
2006 Tacoma 2.7 2wd access cab
1999 Yamaha YZ400FL
2003 Honda XR400R
Re: 91 octane E0 in 87 octane vehicle? [Re: dlundblad] #4780217
06/07/18 01:36 PM
06/07/18 01:36 PM
Joined: Apr 2015
Posts: 185
Canada
Broo Offline
Broo  Offline
Joined: Apr 2015
Posts: 185
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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