LiuGong loader is a heavy machinery and equipment widely used in the field of engineering and construction, and the normal operation of its transmission system is crucial to the overall performance of the machine. As an important lubricant in the transmission system, the amount of transmission oil directly affects the operating efficiency and life of the loader. First of all, we need to understand the characteristics and requirements of Liugong loader transmission system. The transmission system of Liugong loader adopts advanced hydraulic transmission technology, which has very high requirements for transmission oil. Transmission oil not only needs to have good lubricating properties, but also needs to have excellent wear resistance, oxidation resistance and thermal stability. Therefore, when choosing a transmission oil, it is necessary to choose a special transmission oil that meets the requirements of the transmission system of Liugong loaders. Secondly, regarding the filling amount of Liugong loader transmission oil, the specific value will vary depending on the loader of different models and specifications. Generally speaking, the amount of transmission oil should be clearly specified in the loader's instruction manual. Before use, the operator should carefully read the manual to understand the filling method and standard of transmission oil. In actual operation, the following points should be paid attention to when filling the transmission oil: first, to ensure that the inside of the transmission system is clean to avoid impurities and moisture entering; secondly, to fill according to the specified filling amount, not too much or too little; finally, after the filling is completed, to check whether the transmission oil level height meets the requirements, and timely replace and replenish the transmission oil. In short, the correct filling of transmission oil is one of the important measures to ensure the normal operation and prolong the service life of Liugong loaders. The operator should carefully understand the characteristics and requirements of the transmission system of the loader, fill according to the specified filling amount, and regularly check the use of transmission oil to ensure the normal operation of the loader.