Other oils including engine oil, hydraulic oil, gear oil; different grades and different grades of oil can not be mixed; different chemical reaction or physical effect of different varieties of additives in the production process excavator oil added; to ensure that use oil cleaning, Shandong used excavator plant to prevent debris (water, dust, particles, etc.) is mixed; according to the ambient temperature and uses oil label selection. Ambient temperature is high, professional second-hand excavator factory price, should be used in the viscosity of the oil used excavator factory Which is strong, the ambient temperature should be used in small low viscosity oil; gear oil viscosity is relatively large in order to accommodate a larger drive load, the viscosity of the hydraulic oil is relatively small, in order to reduce the liquid flow resistance. The first generation of excavators: motor, the internal combustion engine occurs, so that the excavator has advanced and suitable electrical device, so a variety of excavators have been born. In 1899, the first electric excavators appeared. After World War I, the diesel engine is also used in the excavator, the diesel engine (or motor) driven mechanical excavator is the first generation of excavators. Used excavator manufacturers, Jin Hao used excavators, used excavator factory in Shandong Jin Hao from Shanghai Used Construction Machinery Co., Ltd .. 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.