Additive for liquefied-gas fuels

A method of imparting corrosion-resistent properties to a liquefied gaseous hydrocarbon fuel comprising adding to the fuel at 50 to 400 ppm, an additive comprising:

• a) 30-60 volume percent of at least one nitrogen-containing solvent selected from the group consisting of formamide derivatives, thioformamide derivatives, N-alkyl-pyrrolidone derivatives with one or two carbon atoms in the alkyl residue, acetamide derivatives, secondary N-alkanolamines, tertiary N-alkanolamines each of 1-4 carbon atoms in the alkyl residue and nitro paraffins of 1-8 carbon atoms,
• b) 30-60 volume percent of at least one nitrogen-containing dispersing agent selected from the group consisting of morpholine, morpholine derivatives, thiomorpholine, thiomorpholine derivatives and cyclohexylamine,
• c) 0.5-10 volume percent of a nitrogen-containing corrosion inhibiting agent selected from the class consisting of primary, secondary and tertiary C.sub.6-14 -alkylamines and C.sub.3-6 -alkylenediamines and
• d) 0.5-10 volume percent of at least one oxidation inhibitor, wherein the sum of ingredients a, b, c and d is 100 volume percent.