Re: Universal M25 losing power
.. so now the question is.. are you achieving a decent/appropriate boat speed at a comfortable RPM? (which need not be max RPM). If so methinks you may be worrying too much..
We motor at a relatively quiet smooth 6.4/6.5 knots, but at an RPM several hundred below max. Pushing it gives us over 7.0, but at a higher consumption and greater discomfort/noise.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)