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Old 04-25-2000, 09:58 PM
intruder intruder is offline
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Join Date: Jul 1999
Location: Youngstown, OH
Posts: 150
Here's a little info on octane that may help. Simply put, lower octane gas is more volatile than higher octane gas. The octane number gives you a 'guesstimate' of the relative number of gas molecules that are 8 carbon molecules long; thus the name octane. The 8-chain carbon burn more evenly and more predictably. Other length chain are more volatile and can ignite early or burn faster causing a preignation which is heard as a knock or ping. An experianced mechanic could probably run with this and give you a few reasons why this helps your situation.
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