The operation of automobiles under cold conditions belongs to the use under special conditions. In the northern forest region of China, the cold winter is the peak season for transporting timber. The way to transport materials mainly by car, while diesel transport materials cars account for a large proportion, the car to operate in the environment temperature is very low (up to minus 30 degrees Celsius or lower) conditions, sometimes even braving the blizzard. In such bad conditions, there are some serious problems in the use of automobiles for a long time. The main problems are; Difficult engine starting; The poor thermal condition of the engine causes the aggravation of wear and corrosion of the parts, and the power of the engine decreases. Higher consumption of fuel and oil; parts