Ethanol Fireplaces, Ethanol Burners, Ventless Fireplaces and Ethanol Heaters. Ethanol is a very high octane fuel, replacing lead as an octane enhancer in gasoline. Ethanol is blended with gasoline, the octane rating of the petrol goes up by three full points, without using harmful additives. Ethanol is a highly efficient fuel. A study by the Institute of Local Self-Reliance in the US found that using the best farming and production methods.
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