On Fri, 05 May 2006 15:36:59 +0100, "Dave Plowman (News)"
wrote:

In article ,
EricP wrote:
I'm nearly convinced. Is there any negative side to running higher
octane fuel in your engine?

Yes, you could be wrecking your engine if the compression ratio can't
take the faster burning fuel. In simple terms, it goes bang faster
than lower octane ratings, so the engine must be flexible enough to
take it.

That is simply wrong. High octane pertol burns *more slowly* than low. You
won't damage any petrol engine by using a road fuel with a higher octane
rating than it actually requires. The only harm is to your wallet.

A look in the data section of the handbook should clarify it.

Perhaps you'd give a direct quote from one?

Sigh.

Dave it is all to do with the stroke of the pistons and size of
compression chamber. Believe me, it's factual!