Thread: Octane Change
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Old 02-19-2012, 09:39 AM
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oldairboater oldairboater is offline
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Join Date: Feb 2010
Boat: Mastercraft, Prostar, 1992, 351 Ford
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Run the octane level that does not knock under load in the summer. Too low an octane level in a hot engine helps cause early ignition. The only problem with running lower octane levels is that most people can't hear engine knock or don't recognize it. If you ask people what ping, valve chatter, or engine knock sounds like the answers are not always right. The higher octane gas will not hurt your engine and changing to a higher octane will not hurt your engine. You will be spending more of your dollars but not harming your engine.
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