One thing I forgot, the Valley Detroit guy did stress that you need to follow the manual on changing the oil if you're going to let the engine sit for awhile.

Seems you want to drain the old oil out when the engine is cold to make sure you get all of the condensation that is in the old oil, fill with new oil and only run the engine for a couple of minutes with the new oil so it lubricates everything but doesn't get hot enough to cause condensation when you shut down.