Question: Do you really want to clean the internals (with Dexron II) and reduce the amount of suspended
oil that would ultimately rest on the bearing journals, piston rings, etc? I would think you'd want the opposite for LT storage.
I would also add possibly pulling the plugs and spraying some WD40 (or some type of penetrating
oil) in there before hand tightening them back in. Anything to coat the upper cylinder walls and reduce the chances of rust.
-Dean