Winter preparation...

[scheides]

I say leave oil in it. Change it, but leave oil in it.

I used to store my old gti at my parent's place while I was at school. I went home at christmas to discover mice running around in it. Take some dryer sheets (downy or whatever is smelliest) and stick them in various openings around the engine compartment (i.e. around the strut towers, in the area where the battery was, etc) and then lay a single sheet on the base of each seat, and maybe a few on the floor (especially up near the floor vents) for good measure. They never came back, and my interior and engine bay were fully in tact when I checked it after that.

Note: if you over do this, you car will smell a little funny when you pull it out of storage. Detail w/ armoral or some such product & cruise w/ the windows down & this will go away promptly.