Question 7 of 30
Function of crankcase lubricating oil in a diesel engine is to ____
A
improve combustion
B
prevent corrosion
C
supply power
D
turn crankshaft
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Answer & Explanation
The correct answer is Option B: prevent corrosion.
Lubricating oil within the crankcase serves multiple purposes, including lubricating the crankshaft and connecting rod bearings, cooling these components, and preventing rust and corrosion on internal surfaces. It does not directly improve combustion or supply power.