Modifying my question a bit... in retrospect it doesn't matter what brand of seal it is, having a grease nipple presupposes that I have to grease it? On my last boat I had a PSS shaft seal that didn't need greasing. As mentioned earlier, this seal has a few drips with the engine
running, and I am certain that the previous owner never maintained the seal. How often should I inject grease, how much should I put in, and does grease form part of the drip-proofing of this type of seal? Given my great age I am far more familiar with conventional stuffing boxes and am a little out of my depth
with all this new fangled stuff.