Ole-Hjalmar Kristensen wrote:

Do you happen to know if there is any centrifugal separator on the
market suited to small boats? I cannot really think of any technical
reasons why not, but perhaps the market isn't there.

Alfa Laval makes a cute little unit that will process about
170 liters/hour. Alfa sells it mounted on a cart with pump
and controls for use as a portable oil polishing unit. The
centrifuge is available by itself.

I would love to have one but the cost is a bit too high to
justify its use on a pleasure boat.

Btw., I once had
a Scania truck diesel engine which had a centrifuge for its
lubrication oil. Judging from the amount of gunk it separated out of
the oil, it worked very well.

A "spinner" that worked off the oil itself? Those things are
great. Have used them on several diesel generator sets and
they do an excellent job. A little trick to make them easier
to clean, line the bowl with a single layer of newspaper.

Rick