Strange octane grades
This is something I've been meaning to ask about for quite a while but forgot. I went to a gas station once and they had five grades to choose from 87, 88, 89, 90, 91. Now could someone explain to me, why you would get either 88 or 90 octane? I have never heard of a car that recommended 88 or 90.
Also, what is the most unusual octane grade that you have ever seen? The most unusual I've seen is 89.5 octane at Gateway F/S.
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"To Debate and Moderate" since 2006
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