Years ago We looked very closely at adding an oil
spinner on our old Westerbeke
. They are used quite a bit by the long haul truckers that rarely turn their engine
off. Also many of the oil rig service
boats use them as well. But we found our old Westy didn't have enough oil pressure to spin the rotor fast enough. Folks that I talked with said we needed 40lbs of oil pressure or higher.
I think it makes some sense as it removes any solids in the oil that you can later scrape out into a trash container and toss. Those particles cause wear.
The above link is not the brand we looked at but one that can be used to examine the process.
Be interested in hearing from those folks that have them onboard.