I pumped 89 gas!!!!
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This is a discussion on I pumped 89 gas!!!! within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; help me out, please! i accidentally pumped 10 gallons of 89 unleaded gas into my WRX today. i just wasn't ...

  1. #1
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    I pumped 89 gas!!!!

    help me out, please!

    i accidentally pumped 10 gallons of 89 unleaded gas into my WRX today. i just wasn't thinking when i did it .

    i just want to know what are some problems that this could lead to or any side effects? short term effects and long term effects?

    i just want to know cause i don't want to break my car or anything like that.

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    Registered User racerWRX's Avatar
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    Re: I pumped 89 gas!!!!

    Originally posted by WRXnooB
    help me out, please!

    i accidentally pumped 10 gallons of 89 unleaded gas into my WRX today. i just wasn't thinking when i did it .

    i just want to know what are some problems that this could lead to or any side effects? short term effects and long term effects?

    i just want to know cause i don't want to break my car or anything like that.
    wow your in deep sh!t....the muffler bearings will not be able to withstand all the pressure.....check your turn signal fluid just in case.

    j/k......you should be fine, you'll feel slower. if your that worried go out and get some octane boost or find some racing gas and mix what you have in you tank.
    have you ever been 4 bagged ???

  4. #3
    Registered User RLsChMiDt's Avatar
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    LOL, don't worry about it! It's not gonna harm anything except maybe your butt dyno. Next time, fill 'er up with the highest octane gas you can find...and then you'll see why you put higher octane in!
    -Ryan |Dub-Yuh Our Ex Ess Tee Eye| My Car

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    whoa there racerwrx, almost got me there. scared the crap out of me!

    thanks for the replies though

    btw, i stopped at 10 gallons and then filled the rest with 93 which is about 4 gallons. would this alleviate the problem a little bit? and how much does octane booster go for and where can i get it?

    man, i don't know what is wrong with me lately.

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    Mixing octanes does not equate to a rating in between. You will either be burning 93 octane, or 89 octane. Octane booster is one of those things that has too much debate to comment about.

    If it were my car I'd just be sure to baby it for the tank, no full throttle or high RPM, then I'd run it as low as possible, fill with Sunoco Ultra 94, take it easy for that tank and forget about it after the next fill up. Yep, I'd be that anal even knowing that the computer 'should' compensate for the little error.

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    Registered User palaban's Avatar
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    You could try adding some Toulene. I just read a post about octane calculations. This was taken from http://www.elektro.com/~audi/audi/toluene.html and http://www.i-club.com/forums/showthr...threadid=14411.
    Q: How much toluene should I use per tank of gas?

    A: Octane ratings can be very easily calculated by simple averaging. For example, the tank of an Audi A4 1.8TQ is 15.6 gallons. Filling it with 14.6 gallons of 92 octane and 1 gallon of toluene (114 octane) will yield a fuel mix of:
    (14.6 * 92) + (1 * 114) / 15.6 = 93.4

    So in your case it's:
    (10 * 89) + (4 * 93) / 14 = 90.1

    If you add 2 gallons of Toulene, you're back to 93:
    (14 * 90) + (2*114) / 16 = 93
    Last edited by palaban; 04-10-2003 at 09:33 PM.

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    Moderator GV27's Avatar
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    The point is your ECU will just pull timing back a bit to avoid detonating. It'll rob you of some power but won't hurt anything.

    I realize real men like us don't read the manual, but it talks about just this situation......erm, uhh....or so I'm told
    "Inasmuch as ye have done it to one of the least of these my brethren, ye have done it to me." -Jesus

    1990 Alfa Romeo Spider Veloce
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    Registered User pityr's Avatar
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    Originally posted by glepko
    Mixing octanes does not equate to a rating in between. You will either be burning 93 octane, or 89 octane. Octane booster is one of those things that has too much debate to comment about.

    If it were my car I'd just be sure to baby it for the tank, no full throttle or high RPM, then I'd run it as low as possible, fill with Sunoco Ultra 94, take it easy for that tank and forget about it after the next fill up. Yep, I'd be that anal even knowing that the computer 'should' compensate for the little error.
    Mixing the gas will to change the octane. Gas stations really only have 2 grades of gas, 92 and 87. They mix it at the pump to get 89.
    No one will truely be free until nerd persecution ends.

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    Registered User ShotgunTC88's Avatar
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    Dam!........What an enlightanment!!!!

    Know I know how to "fix" the Ol, Lady when she wants to borrow my ride!!!!


    LOL!


    Shotgun

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    Originally posted by pityr
    Mixing the gas will to change the octane. Gas stations really only have 2 grades of gas, 92 and 87. They mix it at the pump to get 89.
    Looks like I was mislead on that one. While researching the truth I found this site that seems to be pretty cool. I'm going to disagree with the mixed at the pumps statement though, that may be true at some stations but I know for a fact of at least one Sunoco station that (had) a seperate tank for each grade at the pump. They had to order each grade according to how much of it sold. I say had because it's since been sold in exchange for a Citgo...blahhh.

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    Registered User PKer's Avatar
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    89 isn't even that low. In Cali we get 87, 89, or 91 for premium, it sucks.

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    it's cool though guys......i think i am going to get some octane booster for my car and worry less about it

    i just hope my car runs fine for another 5-10 years

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    arent they selling 100 octane in some places now? I saw some test and it increased a 350z's hp by like 10.

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    Banned dark_rex's Avatar
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    Re: Re: I pumped 89 gas!!!!

    Originally posted by racerWRX
    wow your in deep sh!t....the muffler bearings will not be able to withstand all the pressure.....check your turn signal fluid just in case.

    LMAO!!

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    hey racer, thanks for the reminder. I checked my turn signal fluid and i was REALLY low. Im glad i got it filled back up before any major problems happened. LOL
    s14

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