As far as Hy-Gain-type rotators greasing goes, Hy-Gain recommends an
all-purpose grease - something that's not very thick and not thin. You want it
to stick to the bearings without gumming them up. I think they suggested a
lithium grease. (I'm going on memory and experience here - I don't have a
manual to look at.) They also suggest an amount equal to a thimbleful of
grease. Any more is too much.
If you live in an area where it freezes, you may want to use a
snowmobile grease for it's low temp capability.
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