Abstract: A fuel composition is disclosed comprising a major amount of hydrocarbons boiling in the diesel range and an effective deposit-controlling amount of at least one stability additive or at least one antioxidant additive or mixtures thereof, and wherein the fuel composition contains no more than 30 ppm of active detergent additive or active dispersant additive or mixtures thereof.

Abstract: Middle distillate fuel compositions are disclosed which comprise a major amount of a middle distillate base fuel; an olefin mixture comprising propylene oligomers having an initial boiling point of at least 165° C. and a final boiling point of no more than 325° C. as measured by ASTM D86; and at least one phenolic antioxidant. Also disclosed are methods of operating a fuel consuming system employing such compositions.

Abstract: Middle distillate fuel compositions are disclosed which comprise a major amount of a middle distillate base fuel; an olefin mixture comprising propylene oligomers having an initial boiling point of at least 165° C. and a final boiling point of no more than 325° C. as measured by ASTM D86; and at least one phenolic antioxidant. Also disclosed are methods of operating a fuel consuming system employing such compositions.

Abstract: Disclosed is a combustible heavy hydrocarbon-in-water emulsion comprising: a. a nitrogen base neutralized phosphate-ester emulsifier in about 0.2 to about 1.0 wt. % amount; b. a water-soluble emulsion stabilizer comprising a high molecular weight water-soluble thickener in about 0.02 to about 0.2 wt. % amount; c. water in about 25 to 50 wt. % amount; and d. a high-softening point hydrocarbon material in an amount to make 100 wt. % emulsion wherein said hydrocarbon material is present in said emulsion in the form of substantially spherical particles having a median diameter in the range of 1 to 30 microns. Also disclosed and claimed is a combustible slurry fuel made from said emulsion which contains carbonaceous solids, particularly petroleum coke. The process for making the emulsion and slurry fuel is also disclosed and claimed.

Abstract: A low emissions diesel fuel with prescribed levels of aromatics and cetane number is disclosed which, when combusted in a diesel engine, results in lower emissions than the California Reference diesel fuel.

Abstract: A low emissions diesel fuel with prescribed levels of aromatics and cetane number is disclosed which, when combusted in a diesel engine, results in lower emissions than the California Reference diesel fuel.