Question 7 of 30
Function of crankcase lubricating oil in a diesel engine is to reduce friction between moving parts, cooling the parts and to _______________
A
Prevent corrosion
B
Supply power
C
Turn the crankshaft
D
Improve combustion
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Answer & Explanation
The correct answer is Option A: Prevent corrosion.
Besides reducing friction and cooling, lubricating oil in the crankcase also serves to prevent corrosion on internal engine components. It forms a protective film that inhibits rust and oxidation, especially during periods of inactivity.