Amsoil Inc. is an American corporation based in Superior, Wisconsin that primarily formulates and packages synthetic lubricants and filters. The company's advertising slogan is The First in Synthetics. Amsoil uses multi-level marketing for distribution.Amsoil products are sold through independent Dealers - people willing to invest time and effort into building a successful business. Amsoil provides training materials, administrative assistance, technical support and everything needed to build a successful Dealership. Own your own business, be your own boss and earn extra income.