Q3. Express your reactions and state the subsequent investigation you would make if a laboratory report on a used diesel engine oil sample indicated the presence of appreciable amounts of: (16)
A. Iron
B. Copper
C. Antimony and Tin
D. Silicon
E. n-pentane and toluene insoluble.
Q2. (a) State, with reasons, the properties required for a cylinder lubricant for a main engine operating on HFO. (8)
(b) Describe, with the aid of a sketches, an electronically controlled cylinder lubrication system, stating how the timing and quantity of cylinder lubricant is regulated and set. (8)
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