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Common ethanol fuel mixtures

Ethanol (ethyl alcohol) and methanol (methyl alcohol) are two types of alcohol fuels.

The use of pure alcohols in internal combustion engines is only possible if the engine is designed or modified for that purpose.

However, in their anhydrous or pure forms, they can be mixed with gasoline (petrol) in various ratios for use in unmodified automobile engines.

Typically, only ethanol is used widely in this manner, particularly since methanol is toxic.

Note:   The above text is excerpted from the Wikipedia article "Common ethanol fuel mixtures", which has been released under the GNU Free Documentation License.
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