13864600749 Weifang Weichai Weichai 4105 generator two maintenance process of Weichai 50KW generator with Weifang R4105ZD diesel engine; Weifang 75KW generator with Weifang R6105ZD diesel engine; according to the area, season, environment temperature with different oil viscosity. The winter cold area, should use the multipole oil viscosity pour point, low (such as 15W/40), in order to ensure the smooth and effective vehicle winter cold start timely supply to each lubricating point and the surface; the area of high temperature, high viscosity oil need to use