How to Prepare Your Car for Long-Term Storage (6+ Months)

Why Preparation Matters

A car stored without proper preparation will develop problems. Flat spots in tires, dead batteries, dried seals, fuel system clogs, and rodent damage are common and costly. A few hours of prep now saves hundreds in repairs later.

Full Preparation Checklist

Fuel System

• Fill the tank to prevent moisture buildup — add a fuel stabilizer (STA-BIL is common) and run the engine for 5 minutes to circulate it through the entire system
• Do not fill completely if storing in a temperature-controlled space — fuel expands with heat

Battery

• Disconnect the negative terminal OR use a trickle charger (battery tender)
• If not trickle charging, remove the battery and store it in a temperature-stable location
• A dead battery after 3+ months of storage is the most common post-storage problem

Tires

• Inflate to the max PSI listed on the sidewall (not the door jamb sticker) to help prevent flat spots
• If storing for more than 6 months, consider placing the car on jack stands to completely unload the tires
• Move the car 1/4 turn every 30 days if you cannot use jack stands

Fluids

• Change the oil before storage — old oil contains acids and moisture that will corrode internal engine surfaces over time
• Check coolant, brake fluid, and transmission fluid if due for a change soon
• Do not add any water to the windshield washer fluid reservoir — use proper washer fluid to prevent freezing and bacterial growth

Pest Prevention

• Do NOT store food items inside the car — even sealed packaging attracts rodents
• Plug exhaust and intake holes with steel wool or commercial pest-blocking products — mice are famous for chewing wiring
• Place dryer sheets in the cabin and engine bay — rodents dislike the scent
• Set traps near the car's corners as a precaution

Other Steps

• Wash and wax the exterior thoroughly before storage — dirt accelerates paint degradation
• Apply leather conditioner if leather seats are present
• Crack the windows slightly for air circulation (only in secure, covered storage)
• Engage the parking brake only after chocking the wheels — brake pads can fuse to rotors if left engaged
• Remove or secure theGarage door remote and any valuables

What to Do When You Retrieve the Car

• Reconnect the battery (clean terminals first)
• Check tire pressure and inflate if needed
• Check all fluid levels before starting
• Start the engine and let it idle for 30 seconds before driving
• Test brakes carefully at low speed — pads may have surface rust from sitting