Difference with premium gas!

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Sorry - he has it entirely wrong. High octane fuel does not burn more slowly or expect higher combustion temperatures than regular gasoline - it just has a slightly higher threshold of switching from propagating ignition by flame front to pressure front when the fuel-air vapor is compressed. This translates to a higher ignition point but has nothing inherently to do with energy density, flame propagation rate or completeness of combustion.
Mike
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Dont worry TeggeR Americans have it too good now with cheaper gas prices compared to Europe but there too will come a time when they too will feel the crunch when it starts effecting there pocket and yes those little 1.4Liter cars over in Europe will start to look so attractive to them =D
--
johnin

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