A barrel of crude oil is about 42 US gallons. Oil refineries heat it to 370 degrees celcius, as the vapor rises it is transformed into various oil products. The lighter molecules of gasoline, diesel or jet fuel continue to rise until it is cooled and syphooned into seperate holding tanks. A barrel of crude oil can make about 19 US gallons of gasoline, 10 gallons of diesel, 4 gallons of jet fuel and another 9 gallons of other oil products such as liquid petroleum gas, plastics, lubricants or heating oil. A flight from San Francisco to Tokyo may take about 9,000 US gallons of jet fuel which requires about 2,250 barrels of crude oil to extract.
Related: Oil Production