“No, I do not stop immediately. I reduce to dead slow, evacuate the engine room, and engage remote monitoring. Stopping can cool the crankcase rapidly, condensing oil mist and hiding the hot spot. I investigate using a thermal camera on the crankcase door first.”
Never say “stop the engine immediately” – that loses points. Slow speed engines need airflow to prevent secondary explosions.” Stcw Test Engine Management Slow Speed Answers