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Why are octane levels of US gas so much lower than the rest of the world (e.g. Asia where octane levels are ~97/98/99)?
I'm curious about something. Why are octane levels of US gas so much lower than the rest of the world?
That's an interesting question. One possibility could be due to different regulatory requirements. In the US, the minimum octane rating for gasoline is 87, while in other countries it is often much higher.