Best 93 Octane gasoline from the big boy gas stations? - Page 3
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This is a discussion on Best 93 Octane gasoline from the big boy gas stations? within the New Member Hangout forums, part of the Community - Meet other Enthusiasts category; Originally Posted by MainFrame I thought 91+ was required? If 93 is required, that sucks for everyone in Arizona/California/Nevada. Does ...

  1. #31
    The Guy On The Couch TownLine500's Avatar
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    Quote Originally Posted by MainFrame View Post
    I thought 91+ was required? If 93 is required, that sucks for everyone in Arizona/California/Nevada.
    Does anyone know why they don't have 93 in the western states?
    I'm curious New England has always had high grade gas 93-94-100-107.
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    Registered User nsibanez's Avatar
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    Quote Originally Posted by TownLine500 View Post
    Does anyone know why they don't have 93 in the western states?
    I'm curious New England has always had high grade gas 93-94-100-107.
    Because they suck. Even into Texas there isn't much over 91

    Thankfully we can run 91
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  4. #33
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    Quote Originally Posted by dooku77 View Post
    Dealer told me 91 is sufficient.
    Sure until you have a blown ringland, then it was insufficient octane
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    Quote Originally Posted by zax View Post
    Sure until you have a blown ringland, then it was insufficient octane
    Not every gas station has 93 where I live so 91 is my only option. Engines covered to 100k anyway.

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    Registered User nsibanez's Avatar
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    You can blow rings on 93. I know a guy...Although he does beat the car pretty hard
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    Quote Originally Posted by nsibanez View Post
    You can blow rings on 93. I know a guy...Although he does beat the car pretty hard
    What kind of "beating the car hard" does he do? Any mods?

    From my findings, blowing rings are from certain mods and clear abuse....altho I am sure there are exceptions.


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  8. #37
    Registered User dooku77's Avatar
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    My owners manual says 91 octane and up.

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    OMG WTF MainFrame's Avatar
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    Quote Originally Posted by nsibanez View Post
    Even into Texas there isn't much over 91

    Nearly all of East, North, Central, and South TX has 93 at most stations.. although as soon as you pass west of the i35 corridor the best you can find is 91.

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    Admiral Ackbar the 1st mycologist's Avatar
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    I just stay away from places that look slow (old gas notably sucks now a days).

    The additives are different. I do think Shell is better than the Hess or Marathon I usually get.

    Quote Originally Posted by MainFrame View Post
    Nearly all of East, North, Central, and South TX has 93 at most stations.. although as soon as you pass west of the i35 corridor the best you can find is 91.
    Typically the higher elevation states have lower octane. It works for NA cars because they hit lower pressures in the cylinder at high elevation. FI Subaru cars compensate boost targets down some to make up for the higher charge temp. from the turbo working harder, but they still hold pressure up to the compensation target. Throwing lower octane on top of it isn't good and isn't included in the comp..
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  11. #40
    Registered User grendels_wrx's Avatar
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    Since I live in one of those states with like 10% ethanol ( vile idea ), any reports of stock Subaru motors having problem with that?
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  12. #41
    Admiral Ackbar the 1st mycologist's Avatar
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    I have 10%. I went to an "EtOH Free premium" station in TN and their gas was ****. Maybe old, IDK, but it actually dropped my IAM so I have never tried it again.

    There is no reason per se that E10 should be a problem. It does mess with shelf life and has storage issues though.
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  13. #42
    Registered User nsibanez's Avatar
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    Quote Originally Posted by Bontchimuz View Post
    What kind of "beating the car hard" does he do? Any mods?

    From my findings, blowing rings are from certain mods and clear abuse....altho I am sure there are exceptions.
    I can't remember all his mods other then full straight pipes and elh...but he likes to go to a tunnel on route 15 by new haven and launch the car. And mostly drives it hard
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    OMG WTF MainFrame's Avatar
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    Quote Originally Posted by grendels_wrx View Post
    Since I live in one of those states with like 10% ethanol ( vile idea ), any reports of stock Subaru motors having problem with that?

    e10 is more knock resistant than straight gasoline. I know for cars running ethanol free 94 octane in Canada Cobb recommends to use the 91 octane ACN map, and some still have knock issues. Typically, the more ethanol you can get, the better.

  15. #44
    The Guy On The Couch TownLine500's Avatar
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    [QUOTE=mycologist;3698489]I just stay away from places that look slow (old gas notably sucks now a days).

    The additives are different. I do think Shell is better than the Hess or Marathon I usually get.


    I go to a busy Shell on a main route near my house, there gas is replenished often. And is always high quality.
    Also I run constant data logs and tracked how my car performed on all the local big oil stations ( Shell, Mobil, Hess, Sunoco)
    Shell has given best results, I use Shell the most.
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  16. #45
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    I might be a little late chiming in, but big boy names dont mean squat if they arent busy.
    Busy gas stations= less junk that sits in the tanks and ends up in your vehicles tank.

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