Anyone Use Oil In Their Pump?

[Mile9c1]

Every time I look at pump bearings there is always solid grease around and near the outer race of the bearing.

True, I see that too. There was a discussion a few years ago on the old board about how much bearings heat up and the I didn't think they'd get too hot because of the cooling water, but some peeps said they got pretty hot (enough to breakdown the clear PPG pump cones).

Either way, so little of the grease stays on the bearings that it wouldn't "waste power" IMO. Npw sealed bearings are a different story.