Abstract: A device and method for improving the combustion characteristics of liquid fuels is shown. The device has an elongated casing with a hollow interior and inlet and outlet ports which are inserted in the fuel line of the fuel to be treated. An elongated metal bar is placed within the casing so that the exterior surfaces of the bar contact the fuel flowing within the casing. The metal bar is an alloy made of nickel, zinc, copper, tin, and silver which is generally triangular in cross-sectional area and substantially occupies the interior of the casing. Spaced-apart elevated ridges in the exterior surfaces of the metal bar promote turbulent flow in the fuel passing through the casing and over the surfaces of the metal bar.