Octane vs. MPG

[Stan Yoder <vze2myh5@xxxxxxxxxxx>]

Is there general consensus that there is a c. 1mpg penalty if you go from, say, 89 octane to 87
octane? That's what I've heard a coupla times. If so, is this basically true for both city and
highway driving?

Again, if so, simple arithmetic suggests there is no $ saving using 87, assuming a 10cent/gallon
diff in price between 87 and 89. IOW, the dime/gallon saved using 87 is neatly canceled by the 1mpg loss.

Stan Yoder
Pittsburgh

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