After checking Google et al, I have not seen any really good suggestions. Here is what I was planning to do.
1)place plugs into seal for axle.
2) grease spline/TOB etc to prevent rust.
2) overfill with oil, how about a 50 weight here?
3) place on shelf to avoid water damage.
4)Seal in a heavy bag.
5)one a year, flip over the units to recoat the internals with oil.
Suggestions? Thanks