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Thread: Can a Subaru WRX run on 91 gas?

  1. #1
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    Question Can a Subaru WRX run on 91 gas?

    I know this is not a bike related topic. But i cant be bother going to the Subaru forum and signing up for an account just to ask one question.

    With the petrol prices at these levels and my Subaru WRX being as thristy as a fat dog on a hot summers day. I was wondering if it is ok to run by WRX on 91 octane gas? I have no problem running it on 96.

    Any car gurus out there?

  2. #2
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    If you want the timing to go wonky and the hydrolics to ticcky sure feel free to run 91.
    Not a great idea fart, you will be forking out for repairs in no time
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  3. #3
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    Run it on 96, it'll be better for it and more than likely more economical. I've been involved directly with the used car industry of 10yrs and have seen first hand the differences. In Japan they run closer to 100 octane, so keep it as high as you can.

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    Soooo, you're trying to get 200kw for cheap huh? Classic - buy a flash fast car, then can't afford to run it!!! Ha ha

    Maybe you should buy a corolla. Or use your mum's car. LOL

  5. #5
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    Yeah man, try running a 1970 11:1 7 litre engine on 91, good for one block (the engines).

    Stick to 'Hi-test' stuff.
    Winding up drongos, foil hat wearers and over sensitive KBers for over 14,000 posts...........
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  6. #6
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    What does the manual say if you have one? If it says 91 is OK do it.

    Otherwise check with Subaru.
    Cheers

    Merv

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    My GT-B used to hate 91.

    Use the 96 mate.
    And I to my motorcycle parked like the soul of the junkyard. Restored, a bicycle fleshed with power, and tore off. Up Highway 106 continually drunk on the wind in my mouth. Wringing the handlebar for speed, wild to be wreckage forever.

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  8. #8
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    Traitor! Why would you wan't to drive a thing like that when you have a 600?

  9. #9
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    Ill totally agree with OAB --ditto --in the industry for many years
    The economics of running 91 just dont work Your best bet is to run the new BP gas --Im hearing really good things about it.
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    Don't run force fed motors on low octane!
    Pre-detonation will do bad stuff to your turbine, you may also burn valves. Not good. Don't be a cheapskate.

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    It can be done, but I'd seriously recommend against it.
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  12. #12
    Quote Originally Posted by Drunken Monkey
    Pre-detonation will do bad stuff good.
    Predetonation?....like,that means normal ign right?

    Pre ignition is a combustion event before the spark plug fires.

    Post ignition,or detonation is a combustion event after the spark fires.

    So I presume Pre Post ignition is situation normal??
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  13. #13
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    Quote Originally Posted by Motu
    Predetonation?....like,that means normal ign right?

    Pre ignition is a combustion event before the spark plug fires.

    Post ignition,or detonation is a combustion event after the spark fires.

    So I presume Pre Post ignition is situation normal??
    eh? pre-det, auto-det, just other words for 'engine knock'.

    Had a few too many burbons tonight, have you?

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    Quote Originally Posted by Motu
    Predetonation?....like,that means normal ign right?

    Pre ignition is a combustion event before the spark plug fires.

    Post ignition,or detonation is a combustion event after the spark fires.

    So I presume Pre Post ignition is situation normal??

    Well, technically, pre ignition can cause detonation. So maybe it means pre pre ignition. So it's ignition before the before of combustion. They set fire to the oil wells
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  15. #15
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    Quote Originally Posted by sir.pratt
    Soooo, you're trying to get 200kw for cheap huh? Classic - buy a flash fast car, then can't afford to run it!!! Ha ha

    Maybe you should buy a corolla. Or use your mum's car. LOL
    LOL...

    It is not that I cant afford it, but I am careful not to waste my capital.

    I do. I end up riding my bike or driving my girlfriends car which has a 1.6 litre engine..

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