TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The composition comprises the surfactant preferably at a concentration of 0.01 - 10 wt.%. The composition is an emulsified water blended fuel, or an emulsified water in fuel.Preferred Components: The fuel is diesel fuel. The surfactant has a low molecular weight of 900 - 30 (preferably 400 - 90) g/mol. The natural fat surfactant is selected from triglyceride, hydrolyzed triglyceride, oxidized product of triglyceride, vegetable oil, refined vegetable oil and/or used vegetable oil. The surfactants are amides derived from fatty acids or fatty alcohol, ether alcohol, fatty alcohol, esters of fatty acid, ethers of fatty acid and/or esters of fatty alcohol; and selected from lauric acid, myristic acid, coconut acid, coconut oil, oleic acid, tall oil fatty acid, linoleic acid, soybean oil, apricot kernel oil, wheat germ oil, monocarboxylic fatty acid and/or triglyceride. The fatty acids and their amine salt surfactants are selected from diethyl ethanolamine salts of oleic acid, tall oil fatty acid, stearic acid, palmitic acid and/or lauric acid. The emulsifier is selected from at least one fuel-soluble product (A) made by reacting at least one hydrocarbyl-substituted carboxylic acid acylating agent with ammonia or an amine including alkanolamine or hydroxy amine, where the hydrocarbyl substituent of the acylating agent has 50 - 500C; a second acylating agent (B) having at least one upto 40C hydrocarbyl substituent, and reacting the acylating agent with ammonia or an amine; a water-soluble compound (C) selected from amine salt, ammonium salt, azide salt, nitrate ester salt, alkali metal salt and/or alkaline earth metal salt in combination with the product (A), the agent (B), the product (D) or combination (E); the reaction product (D) of polyacidic polymer with at least one fuel soluble product made by reacting at least one hydrocarbyl-substituted carboxylic acid acylating agent with ammonia, an amine, polyamine, an alkanol amine or hydroxy amine; and a combination (E) of the product (A), the agent (B), the compound (C) and/or the product (D). EXAMPLE - Glycerol monooleate (0.3 parts by weight (pbw)) and concentrate mixture (2.3 pbw) of polyisobutene (with molecular weight of 2300) succinic acid/diethyl ethanolamine salt (23 wt.%), oleic acid/diethyl ethanol amine salt (31 wt.%), 50% ammonium nitrate solution (9.7%) and propylene glycol (4.7%) were mixed into diesel fuel (77 pbw). This organic mixture is then co-fed with water (20 pbw). The final white emulsion was placed in storage bottles. After standing for one month at room temperature, 99% of the material was still an emulsion. No banding or water was observed and only 1% of the diesel fuel had separated.