How to Winterize a Car for Storage

Putting your car in self-storage this winter? Before you park your ride, there are a few simple things you’ll want to do to winterize it properly. Luckily, the process doesn’t have to be complicated. With a few easy steps, you can stash it away and rest easy until spring rolls back around.

Tidy Up Inside and Out

First things first—clean it. Give your car a proper wash and wax. Road grime, tree sap, and hidden bugs can damage the paint over time. Wax adds a little layer of defense while it’s in storage. Inside, declutter and vacuum. Don’t leave behind snacks, wrappers, or anything stinky. Even crumbs can attract unwanted guests (read: mice).

Pro tip: Put a moisture absorber or baking soda box inside to keep it smelling fresh.

Inflate (or Elevate) Your Tires

Tires tend to lose pressure in cold weather, and even more so when sitting still for months. Inflate your tires to the manufacturer’s recommended PSI to avoid flat spots. Storing the car long-term? Consider using jack stands to take weight off the tires completely, especially if you’re stashing it for more than a few months.

Bonus: Jack stands can also help reduce stress on your suspension.

Top Off the Tank (and Add a Fuel Stabilizer)

An empty tank invites moisture, which can lead to rust in the fuel system. Top it off and add a fuel stabilizer. This helps prevent the gas from degrading and gumming up your engine. After adding the stabilizer, run the car for a few minutes to circulate it through the system.

According to AAA, untreated fuel starts to break down after just 30 days—so don’t skip this step.

Check Your Fluids

Think of this as a winter wellness check for your car. Change the oil and filter—especially if it’s due soon. Used oil contains contaminants that can corrode engine parts during storage. Also check coolant levels and ensure you’re using antifreeze rated for winter temps.

Tip: Top off windshield washer fluid with a winter blend that won’t freeze.

Unhook the Battery (or Use a Tender)

If your car’s going into hibernation, the battery will eventually drain. You’ve got two options: disconnect it or use a battery tender. Disconnecting stops slow power drain, but a battery tender (aka trickle charger) keeps it charged just enough without overdoing it. It’s a plug-and-play solution your future self will thank you for.

Cover it Up

A cover can help protect your car from the elements, especially if you’re storing outdoors. Avoid plastic covers or tarps, which can trap moisture underneath and lead to mildew, corrosion, or even nasty mold on your seats or trim.

Instead, look for a breathable, weather-resistant fabric cover made specifically for vehicle storage. These allow airflow, which helps prevent condensation buildup while keeping out dust, dirt, and any curious critters. Even if you’re storing indoors, a cover can help keep the dust off and provide a bit of TLC while it’s parked.

Now that your car is ready for a winter nap, you can enjoy the season and start planning those warm weather road trips to come.

(Public Storage rental agreements prohibit storing property with a total value over $5,000 per unit.)