HF Sinclair (formerly known as HollyFrontier) is an energy company. It manufactures and sells products such as gasoline, diesel fuel, jet fuel, renewable diesel, specialty lubricant products, specialty chemicals, and specialty and modified asphalt, ethanol-blended transportation fuels, as well as produces base oils and other specialized lubricants among others. The company also owns and operates refineries located in Kansas, Oklahoma, New Mexico, Utah, Washington and Wyoming and markets its refined products principally in the Southwest U.S. and Rocky Mountains.