For a car, inactivity can do just as much damage as it does for us people! Damage of nearly every kind can occur from just sitting, such as rotting rubber, mildew development, rust, engine parts can seize , and batteries can go dead.
Here's how to prevent this from happening to your car:
1. Give your classic a good detailing. Wash all road grime and salts from the undercarriage as well as body parts. Give the entire car a good wax.
2. Once your vehicle is ready to be parked for the winter, change or drain all related fluids, especially while the car is still warm.
3. Drain the fuel tank if you are going to store your car for more than six months. Once you have drained the tank, start the engine and run the rest of the gas out of the lines. Old gas will clog carburetors. If you only store your car for a few months, you can just add gasoline stabilizer to delay deterioration.
4. Drain the cooling system and leave the radiator cap off for air circulation. Be sure to handle and dispose of mechanical fluids carefully.
5. Remove the battery and store it on a shelf in a dry place, not on cement.
6. Raise the car and place jack stands under the suspension points. Remove the tires and stack them in a corner placing cardboard between each one and cover.
If you are storing your car outdoors you may want to cover it with a breathable fabric to protect against the elements.