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[[File:Gas-price.jpg|thumb|380px|trends in pump price in USA, in 2009 dollars]]
[[File:Gas-price.jpg|thumb|380px|trends in pump price in USA, in 2009 dollars]]
Gasoline is refined from [[crude oil]] via [[distillation]]. Gasoline is sold at gas or fueling stations where it is pumped into [[vehicle]]s. Gasoline is usually sold in three grades: regular (87 octane in most places, and the cheapest), a mid-level grade (89 octane) and premium (93 octane, usually the most expensive). Most gasoline sold in the U.S, contains 10% ethanol. Some stations also sell a gasoline mix which is 85% gasoline and 15% ethanol which has an 88 octane level; this can only be used in cars built in 2001 or later, or that are specifically designed with "flex-fuel" engines; it cannot be used in other gasoline-powered engines such as lawn mowers.
Gasoline is refined from [[crude oil]] via [[distillation]]. Gasoline is sold at gas or fueling stations where it is pumped into [[vehicle]]s. Gasoline is usually sold in three grades: regular (87 octane in most places, and the cheapest), a mid-level grade (89 octane) and premium (93 octane, usually the most expensive). Some stations also sell a gasoline mix which is 85% gasoline and 15% ethanol which has an 88 octane level; this can only be used in cars built in 2001 or later, or that are specifically designed with "flex-fuel" engines; it cannot be used in other gasoline-powered engines such as lawn mowers.
According to national figures from the U.S. Department of Energy, in May 2007, 46% of the cost of gasoline went to pay for crude oil, 28% for refining, 13% to taxes, and 13% for distribution and marketing.<ref>[http://tonto.eia.doe.gov/oog/info/gdu/gasdiesel.asp Energy Information Administration]</ref> While prices have risen to new highs, in [[inflation]]ary terms, gas prices are still lower than during the 1973 Energy Crisis or the 1979 Energy Crisis. Prices have gone down since the Trump Presidency.
According to national figures from the U.S. Department of Energy, in May 2007, 46% of the cost of gasoline went to pay for crude oil, 28% for refining, 13% to taxes, and 13% for distribution and marketing.<ref>[http://tonto.eia.doe.gov/oog/info/gdu/gasdiesel.asp Energy Information Administration]</ref> While prices have risen to new highs, in [[inflation]]ary terms, gas prices are still lower than during the 1973 Energy Crisis or the 1979 Energy Crisis. Prices have gone down since the Trump Presidency.