Petrol prices stay high despite the fall in oil prices | ABC News
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Gasoline or petrol is a transparent, petroleum-derived liquid that is used primarily as a fuel in spark-ignited internal combustion engines. It consists mostly of organic compounds obtained by the fractional distillation of petroleum, enhanced with a variety of additives. On average, a 42-U.S.-gallon (160-liter) barrel of crude oil yields about 19 U.S. gallons of gasoline after processing in an oil refinery, though this varies based on the crude oil assay.