Exam Question
With regard to care of lubricating oils onboard, answer the following:
(a) What is microbial degradation of lubricating oil and how is it prevented? What methods are employed to ensure correct sampling for shore-based testing? (8)
(b) What action will you take if the testing results show abnormal values of water content and TBN for the crank-case lube oil of a slow speed main engine? (8)