Panasonic NJS

"Mine don't actually spin for that long. A disappointingly short amount of time in fact. Tommmmm said that this could be because there is too much grease. They are sooooo smooth though. Could that be true? Not that I doubt him, of course."

"Impossible to have too much grease. Spinning well under no load means nothing. When you sit on it they will spin perfectly. Just like GXP bottom brackets."

"My 7600s dont spin that long compared to the varno quandos i had, couldnt tell when riding though."

Grease light and frequently. Back in the 1970's and 80's pro riders would actually remove all grease from bottom brackets and wheel bearings for TT racing and shorter crits, track and road racing a like. Undoubtedly lubricants have come a long since then, hence this might no longer be the case. It is however a misunderstanding that there are no such thing as greasing too much, certainly if you're looking for optimal performance.

Pro riders of course have no or very little concern about wear and tear, and most of us mortals might not benefit from or even notice the marginal advantage of riding "grease free" over short distances, but for all sorts of reasons you're nevertheless better off greasing as lightly and as frequently as possible. Whether you can be bothered to do so, is an entirely different matter.