CountryMark is an American-owned oil exploration, production, refining and marketing company. The company's complete line of premium quality liquid fuels begins with light, sweet crude oil, which is refined to the highest specifications at the CountryMark refinery in Mt. Vernon, Indiana. Fuel quality is protected as it travels north along a 238-mile private pipeline. State-of-the-art blending technology at each CountryMark fuel terminal ensures that biodiesel and ethanol blended fuels are formulated for optimal driving performance and winter operability. CountryMark also carries Advantage Lubricants, a complete line of high quality, proprietary lubricant products. CountryMark is a distributor of API-certified TerraCair Diesel Exhaust Fluid (DEF). CountryMark fuels, lubricants and DEF are delivered daily to farms, fleets and families across the Midwest, and are available at more than 100 convenient CountryMark-branded fueling stations. More than 65% of farmers and 60% of school corporations in the CountryMark trade area are powered by CountryMark fuels. CountryMark�s upstream business includes an impressive team of petroleum exploration professionals, geologists, production engineers, drilling specialists and reservoir managers. CountryMark�s oil exploration and production group manage 1,400 oil wells in six states producing 2,500 barrels of oil per day. Based on 2015 revenues, CountryMark was ranked as the 10th largest private company with headquarters in Indiana. CountryMark has been a farmer-owned cooperative since 1919.