-Top off gas tank and use STABLE gas stabilizer...this prevent moisture from condensating in tank and rusting it out
-Store battery in basement or somewhere safe in house
-Cover the cement floor under your car with plastic or visqueen or anything that will prevent moisture from seeping upwards from the floor...important to me anyway
-Block up the tires so they aren't on the ground....I have biased ply tires so I can get flat spots if I don't....You make the call on this one
-Cover the car with a quality cloth cover...only after you have washed it down and dried it thoroughly
-Changing your oil is your call...I would if it is dirty
-Fog the engine like others have said....I never have, but I may do so this time around....this is your call again
-Combine any other suggestions posted from others that sound good to you
-Restart your car when you're ready to take it back out in the spring/summer
-Keep pictures handy of your car when you start having withdrawal symptoms during the winter....better know as mopar porn