What is the highest octane that gas can be?



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    The octane levels in the gasoline at the pumps in our neighborhoods usually will range from either 87 or 89 up to 91.  However, depending on where you live and what you drive, you might have access to higher levels of octane in your fuel.  In northern Italy, San Marco Petroli offers fuel with an octane rating of 101 while in Germany Aral Ultimate boasts up to 102.  Here in the United States, we are starting to be introduce ethanol based fuels (E85) which will bump the octane rating up to between 100 and 105, making this a high performance alternative to regular unleaded gasoline.  Although not meant for conventional gasoline engines, the “Flex-Fuel” vehicles that can use E85 produce just a fraction of the harmful toxins and emissions of a normal vehicle.

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