In pre-treating fuel oil on a motor vessel, what would you consider the most important factor to prevent high temperature corrosion on an engine's combustion components?

Correct Answer: Option C — Run one centrifuge as a purifier at a reduced rate to minimize water, especially salt water, in the fuel.

High-temperature vanadium and sodium corrosion is accelerated by sodium present in saltwater. Operating a purifier at reduced throughput ensures maximum removal of water and sodium salts before fuel reaches the high-temperature combustion zone.