Class 4 (4th Engineer) MEKM 📅 Apr 2025

Exam Question

(a) Describe means of recognizing deterioration of the lubricating oil. (8)

(b) Describe how lubrication oil is conveyed to top end, bottom end and main bearings in large bore, 2 stroke cross head type slow speed diesel engine, you are familiar with (8)

Reference Answer

### (a) Means of Recognizing Deterioration of Lubricating Oil
Deterioration of lubricating oil can be recognized through a combination of regular onboard testing and periodic shore-based laboratory analysis. These methods assess the physical and chemical properties of the oil to ensure it remains fit for service.
**1. Onboard (Shipboard) Analysis:**
These are routine tests conducted by the ship's crew to monitor the oil's condition between laboratory analyses.

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