Originally Posted by sunchaser
Or as some experts say, "Have never heard of killing and engine that runs lightly loaded most of the time."
Such as all the old high hour Lehmans, Cats, Cummins or Perkins that are well represented on TF
That's because no one seems to think about the fact that propulsion engines don't suffer the same indignities from low load operations that generator engines do. Everyone likes to talk about low loading issues but then they post links or quotes from articles that describe a generator application.
A generator runs at full rated speed regardless of the load, that is the difference. A properly propped propulsion engine operates (more or less) proportional to load, low rpm, low load, high rpm, high load. The engine is generally quite happy to live like that. It is only the owners who freak out.