We should pay attention to some points when maintaining lubricating system of diesel generator set, as follow: 1.Select suitable diesel oil In generally, every diesel engine manual has specific the type of lubricating oil use. If you can't buy the lubricating oil specified in the manual, you can choose the similar brand lubricating oil. Never mix different brand lubricating oil. 2.Often check the quality of diesel oil during the use Check the mechanical impurities in the oil and check the oil scale in the heat engine time. If there are small particles on the scale or the marking on the oil scale cannot be seen clearly, it means that there are too many impurities in the oil, the oil shall be changed and the oil filter shall be cleaned. Check oil viscosity. It is commonly used to twist the engine oil on the fingers. If there is viscosity feeling and stretching phenomenon, it indicates that the viscosity of the engine oil is appropriate, otherwise, it indicates t