Founded in 1966, Oklahoma Tank Lines / United Petroleum Transports provides transportation services for oil companies and convenience store operators. The company delivers asphalt, lube oil and refined petroleum products. It is equipped with a fleet of more than 500 trailers. Oklahoma Tank Lines / United Petroleum Transports provides solvents, petro chemicals, mineral spirits and caustics. The company has operations in Oklahoma, Kansas, Texas, Arizona, New Mexico and Louisiana. It also maintains an online training center. Oklahoma Tank Lines / United Petroleum maintains a store, as well as provides customer support services. The company offers online information about current fuel surcharge.