Originally Posted by tetonrider

cdd, man....with as measured as you are in so many areas....maintain that bike!

bearings aren't hard to replace.

incidentally, one reason why some pro teams use full ceramic bearings is not that they save energy (bikes are really the wrong application), but rather they can power wash the stuff without risk of corrosion. yeah, they have to use proper grease, but rust isn't a factor. a good steel bearing is pretty awesome.

losses like what you describe don't scale with power, so with your self-described lower average power, you would stand to see more gain.

if i were closer i'd personally replace them for you.