This invention provides a wax inhibitor composition comprising A) the reaction product obtainable by reaction of i) a carboxylic acid containing an optionally substituted cycloaliphatic hydrocarbyl residue with ii) an alkylene polyamine, B) a polymeric wax inhibitor, and C) an organic solvent.

The disclosure relates to fuel compositions comprising a base fuel, a lubricity modifier, and optional additives, and methods for using same. The base fuel is a middle distillate having a sulfur content of <500 ppm. The lubricity modifier comprises a plant-derived liquid decarboxylated rosin acid and optionally at least one of a fatty acid, a fatty acid derivative, and mixtures thereof. The decarboxylated rosin acid has a flash point of 95-180? C., a density of 0.9 to 1.0 g/cm3 at 20? C., a viscosity of 15 to 60 cSt at 40? C., and an acid value of <50 mg KOH/g. The fuel compositions have desired tribological properties, such as wear scar diameter, coefficient of friction, and percent film, as well as cloud point performance.

This invention provides a wax inhibitor composition comprising A) the reaction product obtainable by reaction of i) a carboxylic acid containing an optionally substituted cycloaliphatic hydrocarbyl residue with ii) an alkylene polyamine, B) a polymeric wax inhibitor, and C) an organic solvent.

The disclosure relates to fuel compositions comprising a base fuel, a lubricity modifier, and optional additives, and methods for using same. The base fuel is a middle distillate having a sulfur content of <500 ppm. The lubricity modifier comprises a plant-derived liquid decarboxylated rosin acid and optionally at least one of a fatty acid, a fatty acid derivative, and mixtures thereof. The decarboxylated rosin acid has a flash point of 95-180 C., a density of 0.9 to 1.0 g/cm3 at 20 C., a viscosity of 15 to 60 cSt at 40 C., and an acid value of <50 mg KOH/g. The fuel compositions have desired tribological properties, such as wear scar diameter, coefficient of friction, and percent film, as well as cloud point performance.