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Originally Posted by sdorn
I guess that some would argue that it is cheap insurance to just go ahead and buy the highest octane fuel available. I figured it out, and over the three year lease on my car it would cost me around $500 more to use premium vs. regular and about $250 to use premium vs. mid-grade. To some that is cheap insurance. I will probably stick with the premium.
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You may also notice a decrease in fuel economy running on lower grade gas which would further erode the cost savings.....not to mention performance decreases.....