Engineering · Diesel — Fuel
Before a heavy-fuel engine is shut down for an extended period, it is good practice to:
- AStop the lube oil pump immediately
- BChange over to and run on distillate (diesel) fuel✓ Correct
- CDrain the jacket water
- DOpen the indicator cocks and leave them open
Explanation
Switching to distillate before shutdown clears heavy fuel from the injection system so it does not congeal in the pumps and injectors, ensuring a clean restart.
Authority: Diesel Fuels (USCG engineering topic)
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