Focus Fanatics - View Single Post - anyone using premium gas ?
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Old 12-30-2011, 01:36 PM   #57
prm1177
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Join Date: Nov 2011
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Location: Hercules, CA
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The reason regular gas at high altitudes has a lower octane is because the thinner air lowers compression levels, and therefore makes detonation less likely with a lower octane fuel.
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