Thanks for the additional input. That's a 105 weight grease? I started the motor tonight and it ran like a top! I guess I need to get some grease and re-fill the lower unit.
Lubriplate 105 is a motor assembly grease available at Napa auto stores. It is handy, as it comes in a big "toothpaste" tube that has a nozzle convenient to apply it into the gearbox hole.
I would guess the viscosity to be slightly above 105, but what do I know.