TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compounds: The low alcohol isomer coupling agent is isopropyl, isobutyl, trimethyl carbinol and/or 3-methyl butanol. The coupling activator is methyl-tert-butyl ether (MTBE), isopropanolamine, N,N-dimethylethanolamine, N,N-diethylethanolamine, dimethyl isopropanolamine and/or diethyl isopropanolamine. The strengthening fuel adjuvant is dimethyl ether, MTBE, tert amyl methyl ether (TAME), ethylene glycol monomethyl ether, glycol methyl ether, dimethyl carbonate (DMC), 1,1-dimethyl hydrazine (UDMH) and/or isopropanol ether. The ignition promoter is nitric acid cyclohexyl, nitric acid hexyl, ethylene glycol ether nitrate and/or triethylene glycol ether nitrate. The corrosion inhibitor is organophosphorous compound, amine, naphthenic acid ester, petroleum sulfonate and/or EYJ022(RTM: corrosion inhibitor). The alcohol containing fuel oil is methanol and/or ethanol in gasoline. The fuel oil is gasoline. Preferred Composition: The additive comprises low isomer coupling agent at 60-90 (preferably 80) wt.%, coupling activator at 4.9-20 (preferably 14) wt.%, strengthening fuel adjuvant at 2.5-15 (preferably 2.9) wt.%, ignition promoter at 2.5-4.5 (preferably 2.9) wt.%, and corrosion inhibitor at 0.1-0.5 (preferably 0.2) wt.%. The additive for fuel oil is 1.5-5.0 wt.%. Methanol and/or ethanol is 13.5-45 wt.%. Fuel oil is 50-85 wt.%. EXAMPLE - Iso butyl alcohol (80 wt.%) as low alcohol isomer coupling agent, methyl-tert-butyl ether (MTBE, 14 wt.%) as coupling activator, ethylene glycol monomethyl ethers (2.9 wt.%) as strengthening fuel adjuvant, nitric acid cyclohexyl (2.9 wt.) as ignition promoter, and EYJ022(RTM: corrosion inhibitor) (0.2 wt.%) were mixed to form a fuel oil additive. Methanol gasoline (2 ton) was made from the ratio of 61% of a mobile gas, 4% of methanol gasoline-additive and 35% methanol 35%. Methanol gasoline was put into two private vehicles and one large-size car, and actual operation experiment was conducted. Methanol gasoline was refilled to these three vehicles. The methanol gasoline separation phenomenon was not seen and neither ignition difficulty nor a gaseous jamming phenomenon was also recognized. Further, it was not recognized that methanol gasoline corrodes or blows up the rubber.