What is the Work of the Engine in the Winter?

What is the Work of the Engine in the Winter? What is the work of the engine in the winter? Any spare parts change will make the engine run better? Engine does not start if any parts are bad? Why does the engine not start in winter? This video is made to answer such questions. #diesel_engine #machine #diesel_machine #china_engine #gearbox #cd #CD_engine #power_tiller_tractor