80 octane vs 87 octane

Discussion in 'Thumpers' started by trululu96, Jan 19, 2013.

  1. trululu96

    trululu96 Adventurer

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    Dec 27, 2012
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    MEDELLIN, COLOMBIA
    hi guys I live in a country where the gas is really bad quality, should i fill my 96 honda xr 250 r with 80 oct or 87 oct, i mean will it make any diference in the performance ?
    #1
  2. GAS GUY

    GAS GUY MILE EATER

    Joined:
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    I would run the 87 octane.
    80 is real low, you more than likely will get spark knock and low performance.
    #2
  3. xr400r

    xr400r Long timer

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    xr's are pretty tolerant but I would run 87 if i had the chance.
    #3
  4. kantuckid

    kantuckid Long timer

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    Try posting the same over in regional forums under Latin America or NA trip planning-lots of exp. there in your country.
    #4
  5. Grinnin

    Grinnin Forever N00b

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    You'll need to specify WHICH octane measurement you mean.

    Measuring one sample of gas will give a higher "research" octane than "motor" octane.

    Most countries use the research octane number, so recommendations and pumps show a higher number.

    In the U.S. and Canada recommendations and the pump show the average of the two (R+M)/2. So folks in the U.S. and Canadia are accustomed to a lower number than the rest of the world.

    The difference between the U.S. and Europe may be about 4 or 5 octane, but even that will vary depending on the actual mixture.
    #5