I never considered winter storage as long term so I would just through some stabilizer in a full tank and run it a bit. Other than that I would change the oil in spring and let er buck. If you do use stabilizer make sure it is compatible with your fuel. Most of the ethanol blends don't work with the cheap red stuff, you need a more expensive (of course) stabilizer. I have heard that premium shell is good on it's own over a winter as well, but you might want to look into that.
If you really want to protect the internals, you can fog the engine.
http://www.syntheticoilnlubes.com/en...gging_oil.html