Amide/ester heterocyclic derivatives of hydrocarbylsuccinic anhydrides as rust/corrosion inhibiting additives for fuels

An improved fuel composition comprising a liquid hydrocarbon or liquid oxygenated fuel and a minor multifunctional antiwear, corrosion inhibiting, rust inhibiting, thermal color stabilizing, antioxidant, dispersant and detergent proportion of an additive product of reaction prepared by reacting (1) a hydrocarbylsuccinic anhydride or its acid equivalent with (2) a hydroxyl-containing amine and (3) an aryltriazole wherein the reaction is carried out in molar ratios of said anhydride to amine to triazole varying from about 100/80/80 to 100/10/1 at temperatures varying from ambient to about 250.degree. C., under pressures varying from ambient to about 100 psi for a time sufficient to obtain the desired additive product of reaction.