Engineering · Diesel — Lubrication
Besides reducing friction, a major function of engine lubricating oil is to:
- AIncrease compression pressure
- BCarry away heat and hold contaminants in suspension✓ Correct
- CRaise the fuel's cetane number
- DProvide ignition energy
Explanation
Lube oil cools bearings and pistons, seals ring clearances, cleans by suspending soot and wear particles for the filters to capture, and protects against corrosion — in addition to lubricating.
Authority: Lubrication (USCG engineering topic)
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