A. Selection of fuel
Selecting proper fuel is very important and should be according to the environmental temperature the engine runs in. In the southern hot weather area, light diesel fuel with high cloud point is ok, in the cold northern area, light diesel fuel with low cloud point is necessary. For example, under ordinary ambient temperature, light diesel fuel of grade 0 or -10 is ok; in the south with high temperature, light diesel fuel of grade 10 is all right; and in the north with very low temperature, the light diesel fuel of grade -35 or lower is needed.
Water content and mechanical impurities in the diesel fuel must be as little as possible, or it possibly causes premature blockage of the fuel filter and rusting of the engine parts etc. Poor quality diesel fuel mixing water, kerosene, gasoline up is forbidden to be used.
Note: The fuel must be clean, it’s necessary to settle the fuel at least 7days or filter it through silk cloth in order to remove the mechanical impurities contained. The fuel without being settled or filtered is forbidden, otherwise, it may easily cause fuel supplying problems.
B. Selection of lubricating oil
The lubricating oil for the engine should be grade CF-4 according to GB11122-2006. For the users in the warm area, you can choose lubricating oil of grade CF all year around which can be very helpful to improve lubricating conditions, reduce mechanical wear and extend its lifetime.
Replacement cycle for the lubricating oil
(1)Lubricating oil should be changed in time after first 60 hours run-in operation
(2)Generally, lubricating oil should be renewed when the machine runs every 200h-250h. If the engine runs in a good environment, 300h-350h can be possible. The oil should be exhausted when the machine is hot. You can exhaust the oil as soon as the engine stops.
(3)The oil level in the speed governor of oil pump must be checked before each use,and oil should be added in time when the oil level is lower than the prescribed standard. Oil in the high pressure oil pump should be renewed and the oil filter should be cleaned after oil pump’s running for 100h.
Note: This engine belongs to supercharged diesel engine with high strength and intercooler; therefore, the lubricating oil shouldn’t be lower than grade CF and mixed different grades together.
C. Selection for cooling water
As for cooling water for the engine, city supply water and clean river water is recommended. Well water and other underground water containing too much minerals should not be used, because scale will formed in the water jacket, affecting the cooling efficiency and thus causing engine fault.
When the engine is operated under the environmental temperature of lower than 0℃, special care must be taken to prevent some concerning parts from being damaged by frozen water. Therefore, please exhaust all the cooling water as soon as the engine stops.However, proper antifreeze can be added into the cooling system. http://www.wandiengine.com/