For what it is worth, I don't believe there is any grease that is suitable
for a rotator. In the winter, the viscosity is so high, the rotor strains or
stalls. Over time, the grease hardens, losing its ability to lubricate, and
eventually the bearings and races become destroyed.
I have always used AW-32 hydraulic oil in my rotors and have never had a
failure. It doesn't take much to lube the balls (or bearings), just a coating
you don't want oil sloshing around inside the rotor!
I am interested in other's opinion...
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