I will store my sl500 in a unheated space this winter. Any advice on what needs to be done?

Definately make sure you fill the tank fully with gas so as to eliminate as much condensation as possible in the fuel tank.

Fill the fuel tank, change the oil, put a few extra pounds of air in the tires and then run the car a little before you park it. Don't heat it up, just run it. If you get everything hot then the hot oil drains off all the engine parts. The cool oil sticks better and protects the engine from corrosion.

__________________
Mark
82 300SD 110k
91 Caprice SS
92 Jetta TD
97 Cadillac Concours(300hp)
84 Celebrity 4.3L diesel

Larry, For seasonnal storeage per MB, all of the before mentioned items, add to them, lift the wheels off the ground, secure any open areas rodents or cats may nest, wax the car completely with a quality wax and when all the other items have been done, cover the car with a soft(cheap) car cover, drain and renew the anti-freeze, check the windshield washer bottle for fluid, with the engine running poor a light oil into the intake slowly at first then a lot chocking the engine then turn the key off. This lubes the valves and the combustion chamber. Also remove the spark plugs and squirt a light motor oil into the cylinders then turn the engine over with the starter. Replace the plugs only finger tight. If I have overlooked anything another member will help you. The last thing is to remove the Battery, top of the water and set aside with a trickle charger attached. Happy Trail Beep Beep from Houston.

Donald.
we don't have cold storeage here