What are the best practices for storing a car long-term?

Prepare the Exterior and Interior

Begin with a thorough wash and wax to remove dirt, road salt, and bird droppings that can damage paint over time. Clean the interior, vacuuming carpets and wiping down surfaces to prevent mold and odors from food crumbs or moisture. Apply a silicone-based protectant to rubber seals around doors and windows to keep them from drying and cracking.

Address Fluids and the Fuel System

Change the engine oil and filter before storage. Used oil contains acids and contaminants that can corrode internal engine parts. Top off all other fluids, including coolant, brake fluid, and windshield washer fluid, to their recommended levels.

Fill the fuel tank to near full to minimize condensation inside the tank. Add a fuel stabilizer according to the product instructions, then run the engine for about 10 minutes to circulate the treated fuel through the system. This prevents gum and varnish from forming in the fuel lines and injectors.

Protect the Battery and Tires

Disconnect the battery, or better yet, connect a battery maintainer (also called a trickle charger) to keep it at full charge. If you disconnect it, store the battery in a cool, dry place and recharge it every six to eight weeks.

Inflate the tires to the pressure listed on the sidewall, not the door sticker. This higher pressure helps prevent flat spots from forming where the tire contacts the ground. If possible, park the vehicle on a set of jack stands to take the weight off the tires entirely.

Prevent Critter Damage and Moisture

Mice and squirrels can cause costly damage by chewing wiring and nesting in air filters or exhaust systems. Stuff steel wool into the tailpipe openings and seal the engine air intake with a plastic bag and a rubber band. Place dryer sheets or cotton balls soaked in peppermint oil in the cabin, trunk, and under the hood as a deterrent.

Use a dehumidifier bag or moisture-absorbing crystals inside the vehicle to prevent mildew. Avoid parking on grass or dirt; concrete floors are better, as moisture from the ground can promote rust.

Cover and Position the Vehicle

Park the vehicle in a garage or under a carport if available. Use a breathable car cover designed for storage. Plastic tarps trap moisture and can scratch paint. If storing outdoors, choose a high-quality weatherproof cover and park in a location that offers some shade.

Leave the parking brake off if you are using wheel chocks. The parking brake can rust and seize during long periods of inactivity. Instead, chock the wheels to prevent rolling. Place a piece of cardboard or wood under the windshield wiper blades to keep them from bonding to the glass.

Periodic Checks During Storage

Even a stored vehicle needs occasional attention. Every four to six weeks, start the engine and let it reach normal operating temperature. This distributes oil and helps prevent seals from drying. If you cannot start it, at least roll the vehicle forward or backward a few feet to change the tire contact patch.

Check tire pressure and battery voltage during these visits. Look under the hood for any signs of leaking fluids or rodent nests. Address small problems immediately to avoid larger repairs when you return.

Always consult your owner's manual for model-specific recommendations. Climate conditions, storage duration, and vehicle type will influence some of these steps. This general guidance is meant to help you plan, not to replace professional advice for your particular situation.