Fuel composition containing an aromatic amide detergent

A fuel composition comprising a major amount of a normally liquid fuel and a minor amount of at least one compound of the general formula ##STR59## wherein each Ar is independently an aromatic group having from 5 to about 30 carbon atoms, wherein at least one Ar is an aromatic group of the formula

• ar (L-ar).sub.W
• wherein each ar is a single ring or a fused ring aromatic nucleus of 5 to 12 carbons, w is an integer ranging from 1 to about 20 and each L is independently selected from the group consisting of carbon to carbon single bonds between ar nuclei, ether linkages, sulfide linkages, polysulfide linkages, sulfinyl linkages, sulfonyl linkages, lower alkylene linkages, lower alkylene ether linkages, lower alkylene sulfide and/or polysulfide linkages, amino linkages and linkages having the formula ##STR60## each Ar having from 0 to 3 optional substituents selected from the group consisting of amino, hydroxy- or alkylpolyoxyalkyl, nitro, carboxy or combinations of two or more of said optional substituents, each R is independently a hydrocarbyl group, R.sup.1 is H or a hydrocarbyl group, R.sup.2 and R.sup.3 are each, independently, H or a hydrocarbyl group, R.sup.4 is H or a hydrocarbyl group, each G is independently an amide or an amide-containing group, a carboxyl group, an ester group, an oxazoline-containing group or an imidazoline group, each m is independently 0 or an integer ranging from 1 to about 10, x ranges from 0 to about 8, and each Z is independently OH, lower alkoxy, (OR.sup.5).sub.b OR.sup.6 or O.sup.- wherein each R.sup.5 is independently a divalent hydrocarbyl group, R.sup.6 is H or hydrocarbyl and b is a number ranging from 1 to about 30 and c ranges from 1 to about 3, y is a number ranging from 1 to about 10 and wherein the sum m+c does not exceed the number of valences of the corresponding Ar available for substitution and at least one A is independently an amide group or an amide-containing group.

A fuel composition comprising a major amount of a normally liquid fuel and a minor amount of a composition prepared by reacting

• (a) at least one reactant of the formula ##STR70## wherein R is an aliphatic hydrocarbyl group, m ranges from 0 to about 6, Ar is an aromatic group containing from 5 to about 30 carbon atoms having from 0 to 3 optional substituents selected from the group consisting of amino, hydroxy- or alkyl-polyoxyalkyl, nitro, aminoalkyl, carboxy or combinations of two or more said optional substituents, wherein s is an integer of at least 1 and c ranges from 1 to about 3, wherein the total of s+m+c does not exceed the number of valences of Ar available for substitution and Z is independently OH, lower alkoxy, (OR.sup.5).sub.b OR.sup.6 or O.sup.- wherein each R.sup.5 is independently a divalent hydrocarbyl group, R.sup.6 is H or hydrocarbyl and b is a number ranging from 1 to about 30 with
• (b) a carboxylic reactant of the formula
• R.sup.1 CO(CR.sup.2 R.sup.3).sub.x COOR.sup.10 (XII)
• wherein R.sup.1, R.sup.2 and R.sup.3 are independently H or a hydrocarbyl group, R.sup.10 is H or an alkyl group, and x is an integer ranging from 0 to about 8 and then reacting the intermediate so formed with ammonia or an amine.