Extracting fuel from crude oil- paul-ryan.info
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Crude oil is broken down into its constituent hydrocarbons inside a fractionating column. Lighter hydrocarbons, including petrol, are tapped off high up the column while heavier ones, such as diesel, separate out lower down.

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How car oil is refined

The fuel used in a modern car, whether petrol, diesel or even LPG (Liquid Petroleum Gas), has to ...