 The average chemical formula for common diesel fuel is C12H24, ranging approximately from C10H20 to C15H28.Most diesel fuels freeze at common winter temperatures, while the temperatures greatly vary.Petrodiesel typically freezes around temperatures of −8.1 °C (17.5 °F), whereas biodiesel freezes between temperatures of 2° to 15 °C (35° to 60 °F).