Quote:
Originally Posted by oldtamiyaphile
(apparently our 95 is already a lower octane than European 95 - though I suspect this may not be true).
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The US uses a different ratings scale than most of Europe does. There is about a 4-5 point difference between the two, so one batch of gasoline would likely measure as 91 RON (European system) and 87 AKI (US system).
Their 91 is our regular-grade, basically. Their 95 is on the order of our mid-grade or the "premium" crap we get in CA, and their 98 is pretty close to the higher-grade 93 that some folks in other states can get.
-soD