Re: Climate Controlled Winter Storage - Worth it?
The main enemies of metal are moisture and salt. In combination they will eat your car slowly.
Keeping it dry and free of salt is good.
The cold is really not so much of a problem, keep the battery charged, some gas additive in the tank, pump up the tires to 40 psi or move the car a foot or so every month to prevent flat spots on the tires.
If you have critter problems take some defensive measures and you should be OK.
I start my car every month and run it for 30 minutes, garage door open of course.