Holly Energy Partners, L.P. operates a network of refined and crude oil pipelines and terminal in several western and southwestern U.S. states. Holly Energy's refined product pipelines transport gasoline for oxygenate blending, as well as sulfur diesel, jet fuels, and liquefied petroleum gases. Its intermediate product pipelines transport feedstocks and crude oils. It also operates oil trunk, gathering, and connection pipelines that deliver crude oil. The company was incorporated in 2004 and is based in Dallas, TX.