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Couple of myths, is it true if you run Premium your engine with become accustomed to this and will perform poorly on a lower octane ?
Not true, with this caveat; If you use higher than needed octane long enough you will build up carbon deposits that will cause pre-ignition.
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If you purchase Premium from a pump with one hose and three different octanes and the person in front of you just purchased 87 octane are getting 87 for the first say, quart or so?
Yes, up to 1/3 of a gallon in some instances.
Contra todo mal, mezcal; contra todo bien, también
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