Global demand for fuel system additives is projected to reach US $ 8.3 billion by the end of 2008. Huntsman, Valero Energy, Lyondell, Equistar, Shell Deer Park, Belvieu, Chevron Oronite, and Baker Huges are the major suppliers of fuel system additives throughout the world. Ethanol, cetane improvers, biodiesel, corrosion inhibitors, antioxidants, metal deactivators, deposit control additives, petroleum dyes etc are some of the major fuel system additives in the automobile market. These fuel system additives improve the overall efficiency and performance of fuel used for driving engine of the vehicle.