J.D. Streett & Company, Inc. (JDSC) is a petroleum products supply company. The company is involved in supplying branded lubricants that include gasoline, passenger car and diesel engine oils, hydraulic oils, transmission fluids, gear lubricants and a complete line of industrial lubricants. The company provides services like terminaling operations and fleet transportation through its tanker trucks. JDSC provides its services to manufacturers, wholesalers, distributors, major oil companies etc. It owns and operates a chain of convenience stores with fuel products that span Missouri and Illinois. The company is headquartered at Maryland Heights in Missouri in the US.