111. Both crosshead type and trunk type lubricating oil are received onboard a vessel. These two oils cannot be interchanged due to which of the following reasons?

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crosshead type lubricating oil has a lower base number as it does not need to neutralize the combustion by-products

111. Both crosshead type and trunk type lubricating oil are received onboard a vessel. These two oils cannot be interchanged due to which of the following reasons?

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