Quote:
Originally Posted by mhcoss
Is 91 octane a problem for this engine? Seems to be what I find a majority of the time.
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the density of the air at different altitudes means you find different levels of octane in different parts of the country... lower octanes are typically found in higher elevations
If you find yourself driving through regions with higher octane gas, I would just go ahead and use the highest available at the pump.