Originally Posted by Cover Dog
Amsoil, the first synthetic oil on the market still has their top oil going 25,000 between changes...
Just to correct the record, although commercial uses for synthetic engine oils had emerged as early as the 1920s with Standard Oil and further pushed onto the market in 1946 with National Carbide Company, Amatuzio (founder of Amsoil) felt inspired to conduct research in the early 1960s. He soon re-branded the old technology with the slogan, "First in Synthetics" and sold commercially available synthetic oils using a multi level marketing business plan. Amsoil was founded in 1972 and introduced synthetic in 1973, Mobil 1 was introduced in 1974.