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... I've always heard gas stations get their midgrade gas, by pulling from the lower and higher grade gas tanks. Don't know that for sure, but if so you could probably find a place that sells high octane race gas and buy a couple of gallons to mix in with what you have.



That sounds like a big 'wives tale' story.

Gas is very regulated and monitored. No way of blending high and low octane at the pump.



Incorrect. Mixing the two is exactly how mid-grade is concocted.



Are you saying it's concocted/blended right at/in the gas pump at the gas station itself?

Or before it's delivered to the station?



The pump blends it.