Liquid hydrocarbon fuel compositions containing a stable boric acid suspension

A liquid hydrocarbon fuel concentrate comprising

• a liquid hydrocarbon fuel and
• at least 50,000 ppm boric acid having a particle size in the range of from about 0.5 to about 1 micron, based on the total weight of the liquid hydrocarbon fuel concentrate, suspended in the liquid hydrocarbon fuel.

A low-sulfur liquid hydrocarbon fuel concentrate comprising

• a diesel fuel having a sulfur content of less than 500 ppm, based on the weight of the fuel concentrate, and
• from about 5,000 ppm to about 25,000 ppm boric acid having a particle size of about 65 microns or less, based on the total weight of the fuel concentrate, suspended in the diesel fuel.

A low-sulfur liquid hydrocarbon fuel concentrate comprising

• a gasoline or diesel fuel having a sulfur content of less than 500 ppm, based on the weight of the fuel concentrate, and
• from about 5,000 ppm to about 25,000 ppm boric acid having a particle size of from about 0.5 to about 1 micron, based on the total weight of the fuel concentrate suspended in the gasoline or diesel fuel.

A low-sulfur liquid hydrocarbon fuel composition comprising

• a gasoline or diesel fuel having a sulfur content of less than 500 ppm, based on the weight of the fuel composition and;
• from about 30 ppm to about 5,000 ppm boric acid having a particle size of about 65 microns or less based on the total weight of the fuel composition, suspended in the fuel composition.