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Old 08-04-2012, 10:38 AM   #4 (permalink)
Ryland
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It will not hurt anything at all.
This kind of increase is sometimes blamed in the anti-knock properties of higher octane gasoline and it's sometimes credited with premium gas not having ethanol in it, either way if your car really does get improved mileage from higher grade gasoline it can be well worth the extra 10 or 20 cents per gallon because your cost per mile is dropping.
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