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The Mystery Of Octane Revealed!

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And to add to that, here in Europe we refer to the octane number as RON (Research octane number), and in the US they use PON, where they average the Motor Octane Number and RON, as said in the article: Pump Octane Number = (Motor Octane Number + Research Octane Number) / 2

Now how do they compare (approximately, it is load dependent)?

95 RON -> 91 PON

98 RON -> 94 PON

For an extensive chart see here.



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