Diesel oil used for engineering machinery, such as CF-4 grade of oil, second-hand excavator market, where C represents the diesel engine oil; F representative of the quality levels, each increment of a letter, the oil will be better than previous performance species, used excavators, the letters more reliable, higher quality grade; "- 4" riser grade engine oil performance, second-hand excavator factory, in the same level of the oil, the higher the number, the better the quality. For imported models in the choice of oil is required in accordance with its engine fueling mode to choose: the choice of direct-injection turbocharged engine CF-4 grade oil can; EFI supercharged engine you need to use the CH-4 rating or higher grade oil to ensure the normal operation of the engine. Buy digging machine digging machine used is of high value for money, but many users do not know where to start when buying a second-hand digging machine, because now the price of second-hand excavator market gap is too large, imported second-hand digging machine, the user always worried It will be deceived, afraid to spend a high price but did not get a good hand digging machines, afraid to buy a cheap second-hand digging machine digging machine but not quality problems. So buyers in the purchase of second-hand excavator must be careful to buy. Check that all aspects intact. Used excavator market, Kim Ho used excavators (certified), used excavators by Shanghai Used Construction Machinery Co., Ltd. Jin Hao. Shanghai Jin Hao Used Construction Machinery Co. (www.jinhaosh.cn) is the Shanghai Minhang District, mining machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Kim Ho used excavators in leadership with the staff warmly welcome all inquiries negotiations to create jinhao used excavators better future.