I've never figured out why boaters are SO enthralled with diesels lugging
along at 1200 RPM that are made for 3600-4000 RPM by the Japanese
geniuses.

Amen! I was told early on by a diesel mechanic that it was best to run my
little Yanmar diesel at higher rpms. My boat isn't in the water yet but I
think I usually run mine between 3200 & 3400 rpm. That gives me a little
left at the top if/when I need it. I've been doing this for 18 years & I've
had zero problems.

Frank Wiewandt