NOVELTY - Manufacturing low melting point triglycerides (I) comprises either: (a) transesterifying natural triglyceride (102) with alcohol to form biodiesel and glycerol (105) by-product, where alcohol is obtained from e.g. recovery from waste water from Fischer-Tropsch process (108), and (b) reacting glycerol by-product with short chain acid, where acid is obtained from e.g. recovery from Fischer-Tropsch process and made by oxidation of Fischer Tropsch alcohols; or (a1) transesterifying natural triglyceride with ester to form biodiesel and glycerol by-product, where ester comprises alcohol and acid.    USE - The process is useful for manufacturing low melting point triglycerides (claimed) which are used: in fuel composition including distillate fuels, Fischer-Tropsch derived fuel, a petroleum derived fuel, a biodiesel and additives; to improve the low viscosity, lubricity and low density of Fischer-Tropsch derived fuels; and as a fuel or a fuel blending additive component for cold climates.    ADVANTAGE - The process: improves the overall efficiency of Fischer-Tropsch process and the biodiesel generation by using triglycerides and glycerol by-product streams; and provides the triglycerides which have low melting points and slightly high viscosities that are compatible with distillate fuels.    DETAILED DESCRIPTION - Manufacturing a low melting point triglycerides (I) of formula (C3H5-(CO2)3-(CH2)x-(CH2)y-(CH2)z-H3) (A), when there is saturation and (C3H5-(CO2)3-(CH2)x-2xu-(CH)2xu-(CH2)y-2yu-(CH)2yu-(CH2)z-2zu-(CH)2zu-H3) (B), when there is no saturation, comprises either: (a) transesterification of a natural triglyceride with an alcohol to form a biodiesel and a glycerol by-product, where the alcohol is obtained from purchase, manufacture from synthesis gas used in or as a by-product of a Fischer-Tropsch process and/or recovery from the waste water from a Fischer-Tropsch process, and (b) reacting the glycerol by-product with a short chain acid, where the acid is obtained from sources comprising recovery from a Fischer-Tropsch process, made by oxidation of Fischer Tropsch alcohols, made by the OXO process using Fischer-Tropsch olefins, made by carbonylation of Fischer-Tropsch alcohols and/or made by carbonylation of Fischer-Tropsch olefins; or (a1) transesterification of a natural triglyceride with an ester to form a biodiesel and a glycerol by-product, where the ester comprises alcohol and acid. The acid is obtained from sources comprising recovery from the waste water from a Fischer-Tropsch process, made by oxidation of Fischer-Tropsch alcohols, made by the OXO process using Fischer-Tropsch olefins and/or made by carbonylation of Fischer-Tropsch olefins.    x-z = 0-19 (where x, y and z are not same);    xu, yu and zu = 0-6, (where the values of x, y, z, xu, yu, and zu satisfy the relationship that 2xu is less than or equal to x, 2yu is less than or equal to y, and 2zu is less than or equal to z).    DESCRIPTION OF DRAWING(S) - The figure shows a process flow diagram of the process for making a fuel composition.    Harvested agricultural product (101)    Natural triglycerides (102)    Glycerol (105)    Fischer-Tropsch process (108)    Syngas (112)