A method for the continuous production of an improved diesel fuel, having enhanced ignition characteristics, more particularly with a greater electric conductivity, enhanced cetane numbers and lubricity and with greater percentage of complete combustion, resulting in less soot production and NOx reduction at the same time in an internal combustion diesel engine, breaking the tradeoff in the emission of those two pollutants from an internal combustion diesel engine.

A stable emulsion composition (100) and method of manufacturing. The method of manufacturing can include the steps of hydrating quillaja (104), cooling the quillaja (104) to a temperature of greater than approximately 68 degrees Fahrenheit and less than approximately 72 degrees Fahrenheit, combining the quillaja (104) with an oil (106) phase mixture, adding the water-in-oil emulsion (110) to an additional volume of water (102), adding stabilizers (107) and polysaccharides that interact with emulsifiers in the water-in-oil emulsion (110) to generate a film at an oil-water interface of the water-in-oil emulsion (110), and using a high shear homogenizer to apply a shear force to the water-in-oil emulsion (110) and the additional volume of water (102), the step of using the high shear homogenizer to apply the shear force to the water-in-oil emulsion (110) and the additional volume of water (102) including a catastrophic phase inversion, the high shear homogenizer having a shear rate of at least approximately 1000 s.sup.1.