 All Go-Mart stations are unbranded.Go-Mart is the 53rd-largest convenience store chain in the United States.Go-Mart traces its history to 1914 when brothers Fred, Charles and Rod Heater, operating as the Heater Oil Co., began selling axle grease, kerosene and other petroleum products to farms and businesses in central West Virginia, using flat-bottomed boats on the Little Kanawha River.