Quote:
Originally Posted by My3rdM3
In Europe fuel octane is rated with RON...Research Octane Number, in the US it is represented with the AKI( Anti Knock Index) this is an average of the euro RON and MON (a different way to test fuel rating) In the end, the result is Euro Ron is 4-5 octane higher than US AKI... Hence US 91 octane is the SAME as Euro 95. It is a misconception that Europe offers higher octane than the US. I use 93 octane shell fuel religously which is the SAME as Euro 98 octane shell... hope this helps
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Thank you. Another myth dispelled.