NOVELTY - An alcohol fuel comprises ethanol, isobutyl alcohol, or isopropyl alcohol as main components, where the alcohol fuel comprises ethanol, isobutyl alcohol, isopropyl alcohol, xylene, toluene, and a freezing point depressor.    USE - As an alcohol fuel (claimed) useful in a gasoline internal combustion engine.    ADVANTAGE - The alcohol fuel can be used directly in a gasoline internal combustion engine car in use today without any alteration, and can also be used as a mixture with gasoline. This alcohol fuel is a low-pollution fuel, the exhaust gas of which has a lower content of major pollutant sources causing environmental pollution, such as carbon monoxide and hydrocarbons than that of gasoline, and thus can satisfy low-pollution requirements and minimize a variety of disasters due to the international problem of ozone layer depletion in urban areas and global warming caused by exhaust gas, thus contributing to global environmental protection. The alcohol fuel can obtain the same performance as gasoline without generating excessive heat in an engine by the expansion generated by heat decomposition of alcohol and hydrogen peroxide. Since alcohol has less hydrocarbon molecules than gasoline, the total amount of air required for its combustion is also relatively small. Also, since alcohol has low heat of combustion, and, thus transfers a relatively small amount of heat to the engine, it has little effect on an internal combustion engine. When the mixture fuel of alcohol and hydrogen peroxide is used as a fuel for an engine, it is necessary to reduce the diameter of the intake port of an engine intake manifold and the diameter of a tank valve. That is, requirements for use of the alcohol fuel are satisfied by reducing the diameters of intake and discharge ports to at least 1/5. Thus, there is no need to completely alter the original engine. Moreover, the alcohol fuel reduces the content of carbon monoxide to about 1/6 with respect to that of gasoline, and reduces the content of hydrocarbon to 1/3 with respect to that of gasoline.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing the alcohol fuel involving mixing ethanol, isobutyl alcohol, isopropyl alcohol, xylene, toluene, and a freezing-point depressor.