TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The fuel additive concentrate further comprises: 0.1-5 wt.% of silicone-based antifoam agent; and at least one triazole comprising a triazole compound of formulae (IV) and (V).R3 = hydrocarbyl group having a number average molecular weight of 100-5000.Preferred Components: The hydrocarbyl carbonyl compound comprises hydrocarbyl-substituted succinic anhydrides, hydrocarbyl-substituted succinic acids, or esters of hydrocarbyl-substituted succinic acids. The hydrocarbyl substituent of (b) comprises a hydrocarbyl group having a number average molecular weight of 100-5000, preferably polyisobutylene group derived from high reactivity polyisobutenes having at least 60% or more terminal olefinic double bonds. (I) comprises a salt of aminoguanidine or inorganic salt of guanidine, preferably aminoguanidine bicarbonate. (a) and (b) is present at 0.1-50 wt.% and 0.1-99.99 wt.%, respectively. The additive composition is present at 0.005-0.3000 wt.%. The fuel composition further comprises at least an additive comprising supplementary antifoam agents, dispersants, detergents, antioxidants, thermal stabilizers, carrier fluids, metal deactivators, dyes, markers, corrosion inhibitors, biocides, antistatic additives, drag reducing agents, friction modifiers, demulsifiers, emulsifiers, dehazers, anti-icing additives, antiknock additives, surfactants, cetane improvers, corrosion inhibitors, cold flow improvers, pour point depressants, solvents, demulsifiers, lubricity additives, extreme pressure agents, viscosity index improvers, seal swell agents, amine stabilizers, combustion improvers, dispersants, conductivity improvers, metal deactivators, marker dyes, organic nitrate ignition accelerators and/or manganese tricarbonyl compounds. (a) comprises bis-aminotriazole compound of formula (III) or its tautomers or enantiomers.R6-R10 = H or hydrocarbyl groups, where at least one of R6 and R7 and at least one of R8 and R9 is not H. EXAMPLE - Typical composition comprised (in mg/kg): a reaction product of polyisobutenyl succinic anhydride with triethylenepentamine (42.10); aminotriazole antifoam agent (5); 2-ethyl hexanol solvent (20); aromatic 150 solvent (132); siloxane antifoam agent (8); demulsifier A (3); and demulsifier B (3).