How to Winterize a Car for Storage

When temperatures drop and snow begins to fall, many drivers tuck their vehicles away until spring. Whether you’re storing a classic car, convertible, sports car, or simply a daily driver you won’t be using during winter, it’s essential to prepare it properly before putting it into storage.

Failing to winterize your car can lead to dead batteries, rusted parts, or costly repairs once it’s time to get back on the road. Fortunately, with the right preparation and a secure storage space — such as a climate-controlled or drive-up unit at 10 Federal Storage — you can keep your vehicle protected all winter long.

Here’s everything you need to know about how to winterize your car for storage the right way.

Why Winterizing Your Car Matters

Cold weather, moisture, and long periods of inactivity can be harsh on vehicles. When a car sits for months without proper care:

• Fluids can thicken or deteriorate.

• Batteries can lose charge.

• Tires can develop flat spots.

• Metal parts can rust from condensation.

• Rodents or pests can take up residence under the hood.

Winterizing your car before storage helps preserve its performance, appearance, and value, ensuring it’s ready to start right up when spring arrives.

Step 1: Choose the Right Storage Location

The first step in protecting your car is choosing the right environment for storage.

Indoor vs. Outdoor Storage

• Indoor storage units — such as drive-up or enclosed units — provide the best protection from snow, rain, and freezing temperatures.

• Climate-controlled storage units maintain consistent temperatures, preventing condensation, corrosion, and battery drain — perfect for high-value or classic cars.

• Outdoor storage is an option if covered or tarped properly, but it’s more exposed to temperature swings and moisture.

At 10 Federal Storage, many facilities offer secure drive-up access and climate-controlled units ideal for car storage during winter. Plus, you’ll enjoy 24/7 gated access and video surveillance for peace of mind.

Step 2: Clean Your Car Inside and Out

It may seem unnecessary before storage, but cleaning your car thoroughly helps prevent long-term damage.

• Wash and wax the exterior to remove dirt, salt, and road grime. A coat of wax adds a protective barrier against corrosion.

• Clean the undercarriage, especially if you’ve driven in areas treated with road salt — it’s highly corrosive.

• Vacuum and wipe down the interior, removing any food or trash that could attract pests.

• Clean the windows and mirrors inside and out for visibility when you retrieve the car.

Make sure the car is completely dry before covering or storing to avoid trapped moisture.

Step 3: Top Off Fluids and Add Fuel Stabilizer

Fluids can degrade or cause damage during long-term storage if not maintained. Before putting your vehicle away:

1. Change the oil and filter — old oil contains contaminants that can harm your engine over time.

2. Top off all fluids, including coolant, brake fluid, transmission fluid, and windshield washer fluid.

3. Fill the gas tank and add a fuel stabilizer to prevent oxidation and moisture buildup in the fuel system. Run the engine for a few minutes to circulate the stabilizer through the system.

Step 4: Protect the Battery

Cold temperatures and inactivity can drain your battery completely. To prevent this:

• Disconnect the negative terminal of your battery to stop slow discharge.

• If storing long-term, remove the battery and store it in a warm, dry place.

• Consider using a battery maintainer or trickle charger to keep it charged throughout winter.

If your storage unit has vehicle-approved electrical access, check with the facility before using a charger inside your unit.

Step 5: Take Care of Your Tires

When a vehicle sits in one place for months, its tires can lose air pressure and develop flat spots.

• Inflate your tires to the manufacturer’s recommended PSI before storage.

• For long-term storage, use tire cradles or foam padding to distribute weight evenly.

• If possible, move the vehicle slightly every few weeks to keep pressure even across all tires.

• Alternatively, store the vehicle on jack stands to relieve pressure from the tires and suspension.

Step 6: Prevent Moisture and Pest Damage

Even in enclosed storage, moisture and rodents can pose risks.

• Use moisture absorbers or desiccant packs inside the cabin and trunk to prevent mold and mildew.

• Seal gaps with steel wool or mesh near air intakes or exhaust tips to deter mice or insects.

• Avoid using chemical repellents that could damage vehicle materials.

• Keep windows slightly cracked (just a fraction of an inch) for air circulation if the storage environment is dry and secure.

Step 7: Cover and Secure the Vehicle

Once your car is clean, serviced, and protected, it’s time to cover it properly:

• Use a breathable car cover (not a plastic tarp) that allows air circulation while keeping out dust and debris.

• Avoid covers that trap moisture — condensation can cause paint or chrome damage.

• Lock your car and storage unit securely, and store keys in a safe place.

Step 8: Check on Your Car Periodically

Even when your vehicle is stored long-term, it’s smart to check on it every month or two.

• Look for any signs of leaks, pests, or flat tires.

• Reconnect the battery occasionally to start the engine and circulate fluids (if your facility allows it).

• Verify that your cover and locks remain in good condition.

Regular check-ins keep you informed and help you address small issues before they become big problems.

Why Choose 10 Federal Storage for Winter Car Storage

At 10 Federal Storage, we make it easy to keep your vehicle safe all winter long. Our facilities are designed for security, accessibility, and convenience — everything you need for peace of mind during seasonal storage.

You’ll enjoy:

• Drive-up access units for easy vehicle entry and exit

• Climate-controlled facilities for premium protection

• 24/7 gated access at most locations

• High-definition video surveillance

• Online rentals and bill pay for fast, contactless management

• Month-to-month leases, so you can store for as long as needed

Whether you’re storing a vintage car, a motorcycle, or your daily driver during the winter months, 10 Federal Storage has the perfect space to keep it safe, clean, and ready for spring.

Make Sure Your Car Is Taken Care Of This Winter

Winterizing your car before storage takes a bit of effort, but it pays off in the long run. By cleaning your vehicle, topping off fluids, maintaining the battery, and choosing a secure, climate-controlled storage space, you can ensure your car stays in excellent condition through even the coldest months.

When it’s time to find a safe place for your vehicle, trust 10 Federal Storage for affordable, modern, and secure car storage solutions.

Find a location near you and reserve your unit online today — and rest easy knowing your car is protected all winter long.