Abstract: The chemical conversion of renewable oil to obtain a hydrocarbon product suitable as a fuel, includes (i) renewable oil including corn distillers oil (CDO), fatty acid glyceryl esters (FAGE), triacylglycerols (TAG), lipids, and free fatty acids (FFA), which are derived from non-fossil-fuel sources that include animals, plants, vegetables, fruits, grains, algae, and plankton (collectively “oil”); (ii) the chemical transformation of the oil by substantially reducing or eliminating the carboxylate functionality and native unsaturations of fatty acids contained therein; (iii) wherein the hydrocarbon product is substantially a mixture of saturated hydrocarbons, or alkanes, originating from corresponding structures in the oil, e.g., the hydrocarbon chains of fatty acids; and (iv) the product mixture is suitable as fuel that may be blended with or be used in place of fuel such as diesel derived from petroleum.