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Is there an answer for this, by that I mean one which has been scientifically validated? I ask, because in searching this forum and others, there doesn't seem to be a consensus. I know that octane decreases pre-ignition and detonation which I presume is an issue in high compression hot running engines like ours. But if one uses a higher octane fuel (using the same method of reporting, e.g. 91 vs 94 R+M /2 method common in Canada for example) does one
a) get better fuel mileage?
b) improved performance?
c) improved longevity of engine?
The North American manual I believe says to use a minimum 91, but is is worth paying more for 93 or 94 which is reasonably available across NA?
a) get better fuel mileage?
b) improved performance?
c) improved longevity of engine?
The North American manual I believe says to use a minimum 91, but is is worth paying more for 93 or 94 which is reasonably available across NA?