How many degrees should the temperature of 250cst heavy oil be added to the engine?

45 degrees to 55 degrees. If the oil works at high temperature, the intrinsic properties of the oil will change. In this case, the role of the oil in the lubrication system will be lost, so it is necessary to heat the heavy oil temperature of 250cst to 45-55 degrees. 250 heavy oil is a product formed under the special national conditions of China, especially the heavy oil with kinematic viscosity less than 250cst at 100.