David & list
Phil Wood made a grease injector a long tome ago, it had a threaded boss hat shaped unit where the freewheel screwed on to the boss with a base that had an "O" ring outside of the gap between the freewheel body bearing gap, with a Phil grease gun and grease, one could inject the bearings full of grease, quieted the freewheel definitely. Sometimes caused the pawls to not engage, as they floated in the grease. Some swore by it, others swore at it.
I let others test, never used it myself. Park might as well have made one, the Phil unit was the first I ran across.
John Jorgensen
Torrance Ca