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Actually most cars that"require"remium fuel will perform quite well on 89. Octane boosters do work but the problem is the cheaper ones don't work as well. So you are left with a math problem. Figuring the difference between what you are paying fpr premium over regular multiplied by gallons purchased and compare that to the cost of a booster. In most cases I would suggest you try 89 first and see if your car performs well on it.

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Q: Do octane boosters really work i have a car that requires premium but it wouldnt it be cheaper to buy regular gas and add octane?
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