Tesoro Corporation. The Group's principal activity is to refine and market petroleum products and provide marine logistics services. It operates through two segments namely: Refining and Retail. The Refining segment manufactures gasoline and gasoline blendstocks, jet fuel, diesel fuel, heavy fuel oils for sale in the mid-continental and western United ... More

Tesoro Corporation. The Group's principal activity is to refine and market petroleum products and provide marine logistics services. It operates through two segments namely: Refining and Retail. The Refining segment manufactures gasoline and gasoline blendstocks, jet fuel, diesel fuel, heavy fuel oils for sale in the mid-continental and western United States. It also sells petroleum products to unbranded marketers and occasionally exports products to other markets in the Asia/ Pacific area. It also produces liquefied petroleum gas, petroleum coke and asphalt. The Retail segment operates under the Tesoro(R), Mirastar(R), Shell(R) and 2-Go Tesoro(R) brands. As of 31-Dec-2008 it has 879 retail stations, of which 389 are company-operated.