 
 <prompt> Which one of di following no dey mix with asphalt: diesel oil, releasing agent or kerosene? Given di previous question, write a context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: Asphalt/bitumen dey usually dey store and transport for temperatures wey dey around 150 °C (302 °F). Sometimes diesel oil or kerosene fit dey mixed inside before dem ship am to make sure say e dey flow well; when dem deliver am, dem go comot the lighter materials from the mixture. Dem dey call this mixture "bitumen feedstock", or BFS. Some tipper trucks dey pass hot engine exhaust through pipes wey dey the dump body to dey keep the material warm. The backs of tippers wey dey carry asphalt/bitumen, as well as some handling equipment, dey usually dey spray with releasing agent before dem fill am to help am release. Diesel oil no dey used again as a release agent because of environmental concerns. 