ABSTRACT
The first commercially used synthetic lubricants were silicones, developed by Dow Corning and General Electric in 1943. Then followed polyalkylene glycols, in 1945, developed by Union Carbide, diesters in 1951, phosphate esters in 1953, and polyol esters in 1963. For gasoline and diesel engine oils, the term “synthetic” refers to the base oil portion of the formulated oil. The additives and any polymers are usually considered synthetic, since they are synthesized for specific chemical purposes. The synthetic lubricants business has been progressing steadily since the late 1970s and early 1980s, when chemical companies became interested in the commercial potential of speciality products that could command high prices. Most car manufacturers are promoting the concept of “filled-for-life” automatic transmissions to increase customer satisfaction and to assist with further improving vehicle fuel economy.
