Engineering · Diesel — Lubrication
The primary functions of diesel lube oil include lubricating, cooling, sealing, and:
- AIncreasing compression ratio
- BCleaning/carrying away contaminants and neutralizing acids✓ Correct
- CProviding ignition
- DCooling the seawater system
Explanation
Beyond reducing friction, lube oil cools moving parts, seals the ring-liner gap, keeps deposits suspended (detergent/dispersant), and its alkaline reserve (TBN) neutralizes combustion acids.
Authority: Diesel Engines (USCG engineering topic)
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