Ports Petroleum is an independent wholesaler and transporter of petroleum products and diesel exhaust fluid (DEF). We maintai ... n supply and distribution agreements with many major oil refiners throughout the United States to provide fuel for a variety of consumers. We operate across town for local farmers and nationwide for independent gas stations, government entities, truck stops and convenience stores. Ports Petroleum Company, Inc. also owns and operates unbranded retail fuel and convenience stores in Ohio, Indiana, Illinois and South Dakota. read more