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Thread: minimum octane rating (R+M)/2 method 90 ?

  1. #16
    apriliaforum newb
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    Shawnee Mission, Kansas USA
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    Higher octane is only for higher compression engines.
    2009 Aprilia Mana
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    2003 Kawasaki KLX400SR - Motarded & Dirtarded!
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    1972 Benelli Mini Enduro (basement art)

  2. #17
    apriliaforum expert
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    The only advantage of high octain is to prevent detonation (pinging). if you have a high compression engine it will tend to detonate, hence the premium fuel required. On older engines you could also advance ignition timing which would increase performance, but also increase det. so premium was required. There is no advantage to run premium if you don't have to. It's a myth that an engine that doesn't require premium will run better on premium, It's just the opposite.

  3. #18
    apriliaforum Member
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    Thank's for the info guy's

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