How to Prepare Your Car for Long-Term Storage

Everything you need to do before putting your car in storage — from battery care to tire protection.

Why Proper Preparation Matters

Storing a car without proper preparation can lead to dead batteries, flat tires, pest damage, and deteriorating fluids. A few hours of prep work can save you hundreds in repairs and ensure your car starts right up when you're ready to drive again.

Clean Your Car Inside and Out

Wash and wax the exterior to protect the paint from dust and moisture. Clean the interior thoroughly — remove all food, trash, and valuables. Vacuum carpets and wipe down surfaces. Leftover food attracts pests and odors intensify in enclosed spaces over time.

Top Off All Fluids

Fill the gas tank to prevent moisture from accumulating inside. Add a fuel stabilizer and run the engine for a few minutes to circulate it through the system. Top off coolant, brake fluid, and windshield washer fluid. Consider an oil change if you're storing for more than a month — old oil contains contaminants that can damage engine components.

Battery Care

A car battery will drain over time if left connected. For storage under a month, simply disconnecting the negative terminal may suffice. For longer storage, invest in a battery tender (trickle charger) that maintains the charge without overcharging. Store the battery in a cool, dry place if removing it entirely.

Tire Protection

Inflate all tires to the manufacturer's recommended PSI — tires naturally lose pressure over time. For storage exceeding a month, consider placing the car on jack stands to prevent flat spots from forming. If using jack stands isn't practical, move the car a few inches every couple of weeks.

Protect Against Pests

Rodents love to nest in stored cars, chewing wires and upholstery. Place steel wool or copper mesh in the tailpipe and air intake. Use peppermint oil-soaked cotton balls around the vehicle as a deterrent. Avoid mothballs — they leave a persistent odor and can damage interiors.

Use a Quality Car Cover

Even in indoor storage, a breathable car cover protects against dust, minor scratches, and UV exposure from windows or lights. Avoid plastic covers or tarps — they trap moisture and can damage paint. Choose a cover designed for your vehicle's size.

Final Checklist Before Storage

Release the parking brake (use wheel chocks instead to prevent brake pad adhesion). Close all windows fully. Leave the climate control off. Take photos of your car's condition for documentation. Note the mileage and leave your insurance information accessible.

Frequently Asked Questions

How long can a car sit in storage without being driven?

With proper preparation, a car can sit for 3-6 months without issues. For longer periods, have someone start it monthly and check tire pressure. Battery tenders and fuel stabilizer extend safe storage time significantly.

Should I start my car periodically during storage?

If possible, start the engine every 2-4 weeks and let it run for 15-20 minutes to circulate fluids and charge the battery. If you can't do this, a battery tender and fuel stabilizer become essential.

Do I need to change my oil before storage?

Yes, for storage longer than 30 days. Used oil contains acids and contaminants that can corrode engine internals over time. Fresh oil provides better protection during storage.

Is indoor or outdoor storage better for long-term?

Indoor storage is significantly better for long-term storage. It protects against weather, UV damage, temperature extremes, and reduces pest exposure. If indoor isn't available, a high-quality car cover and covered storage are the next best options.

Should I use a car cover even in a garage?

Yes. A breathable car cover protects against dust accumulation, minor scratches from objects that might fall, and UV exposure from garage windows. Avoid plastic or non-breathable covers as they trap moisture.

How do I prevent flat spots on my tires?

Inflate tires to the recommended PSI before storage. For storage exceeding 30 days, place the car on jack stands to take weight off the tires. If jack stands aren't practical, move the car a few inches every 2 weeks.

What should I do about the parking brake during storage?

Release the parking brake before long-term storage — brake pads can fuse to the rotors over time. Use wheel chocks or tire blocks instead to prevent the car from rolling.

How do I protect my car from rodents during storage?

Seal all openings with steel wool or copper mesh (tailpipe, air intake). Place peppermint oil-soaked cotton balls around the vehicle. Remove all food from the interior. Avoid mothballs — they leave persistent odors.

Should I disconnect the battery or use a tender?

For storage under a month, disconnecting the negative terminal is sufficient. For longer storage, a battery tender (trickle charger) is ideal — it maintains optimal charge without overcharging. Remove the battery entirely if storing in extreme cold.

What fluids should I top off before storage?

Fill the gas tank completely and add fuel stabilizer. Top off coolant, brake fluid, power steering fluid, and windshield washer fluid. Consider an oil change with fresh oil and filter for storage over 30 days.

How do I prepare my car's exterior for storage?

Wash thoroughly to remove dirt, bird droppings, and tree sap that can damage paint over time. Apply a coat of wax for added protection. Clean the wheels and tire sidewalls. Dry completely before covering.

What should I do when taking my car out of storage?

Check tire pressure and inflate as needed. Reconnect or reinstall the battery. Check all fluid levels. Remove any pest deterrents. Start the engine and let it idle for several minutes before driving. Test brakes gently before driving at speed.