Downside(s) of using 87 octane rather than 91?

Discussion in 'General Motoring' started by H. Whelply, Aug 30, 2003.

  1. H. Whelply

    H. Whelply Guest

    Can someone explain clearly what the disadvantage(s) is/are for using 87
    octane rather than 91 octane in an S60? Is octane a more important
    consideration if you have a turbo? More important for HPT than LPT?
     
    H. Whelply, Aug 30, 2003
    #1
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  2. H. Whelply

    Rob Guenther Guest

    Because the engine will retard the timing with 87 ocatane, reducing power,
    and possibly increasing fuel consumption. If you can afford a S60, you can
    afford the premium fuel.... It's not like they are bad on gas.

    And no, its not because in Europe they use 95 octane, their fuel ratings are
    calculated differenly, we just have higher sulphur I believe.
     
    Rob Guenther, Aug 31, 2003
    #2
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  3. H. Whelply

    Proconsul Guest

    Performance and mileage suffer using 87 octane. The car will run, but not as
    well.

    The difference in performance is significant - the improvement in mileage
    makes the price difference not so great....!

    PC

    | Can someone explain clearly what the disadvantage(s) is/are for using 87
    | octane rather than 91 octane in an S60? Is octane a more important
    | consideration if you have a turbo? More important for HPT than LPT?
    |
    |
     
    Proconsul, Aug 31, 2003
    #3
  4. H. Whelply

    AJS Guest

    You MAY also get an increase in carbon build up. Running one in three is
    often recommended as is giving your motor a decent hard run from time to
    time.




    AJS
     
    AJS, Aug 31, 2003
    #4
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