Focus Fanatics - View Single Post - anyone using premium gas ?
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Old 07-11-2012, 09:36 PM   #404
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Why is that?

Quote:
Originally Posted by dyn085 View Post
Too much octane will waste fuel. The unburnt fuel will go right out your tailpipe.
Higher octane gasoline reduces pre-ignition, not ignition is the way I understand it.
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