How often should large engines have their oil changed?
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How often should large machinery units have their oil changed? Is the decision to change the oil based on the unit’s operating time or on the analysis data of the lubricating oil?
Is it based on the operating time of the engine unit or on the analysis data of the lubricating oil that an online oil filter is used for water removal, followed by another analysis of the lubricating oil, before deciding whether to change the oil?
Normally, oil sample analysis of large-scale units is carried out once a month to check parameters such as water content, mechanical impurities, and acidity
Large-scale units are generally determined based on the results of oil analysis, but I know that some units can continue to be used for over 10 years without having their oil changed
This is generally determined based on the oil analysis results of the unit. Small fuel tanks like those in expanders are generally replaced every 3-5 years. For large-scale units, the replacement cost is high due to the large volume involved; it is primarily determined based on the results of oil analysis.
Oil sample analysis of large units is conducted once a month; if no abnormalities are detected, they can continue to be used
This is related to the actual conditions; it is necessary to decide when to change the oil based on the results of oil analysis. It is recommended to regularly test the quality of the oil
The unit I am working on has its lubricant sampled and analyzed once a month; if it meets the standards, no replacement is necessary. I heard from the manager that there are two engines that have been in use for 20 years without any major oil changes, with only occasional top-ups of oil being done
Several key parameters are to be tested: rotating oxygen bomb robt, antioxidant content ruler, paint film tendency index MPC, antifoaming property, air release rate, cleanliness, acid value, and liquid-phase rust prevention; in addition, viscosity and moisture content are also checked. If all the test results are satisfactory, the material can be used as is
Regularly use an oil filter for filtration, and take oil samples for analysis