Not always. If the engine wasn't designed for the higher octane you may actually be hurting the engine, and lowering your gas mileage. With the pumps as high as they are right now, why even think about paying for premium?
Regular, Special, Or Super Unleaded Gas
I know the book says regular is fine...but is it a good idea to use a higher grade? Keep the engine clean and run smoother? Maybe better MGP? :?:
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