Winter Car Prep Checklist by Galloping Gerties Garage

There's something about that first cold snap of the season that catches us off guard every year. One day you're driving with the windows down, and the next morning your car is covered in frost and refusing to start. Winter in the Pacific Northwest can be unpredictable—sometimes mild, sometimes surprisingly harsh—and your vehicle needs to be ready for whatever Mother Nature throws at it.

The colder months put unique stresses on your car that summer driving never does. Freezing temperatures, wet conditions, shorter days, and the occasional snow or ice all demand that your vehicle be in top shape. The experienced team at Gerties Garage has put together this comprehensive winter preparation checklist to help you avoid breakdowns, stay safe, and keep your car running smoothly through the coldest months of the year.

Battery: Your Winter Weak Point

Let's start with the number one cause of winter breakdowns: dead batteries. Cold weather is brutal on car batteries. The chemical reactions that generate electrical power slow down significantly in freezing temperatures, reducing your battery's available power by as much as 50% when the mercury dips below freezing.

At the same time, your engine needs more power to start in cold weather because oil thickens and creates more resistance. It's a perfect storm for a no-start situation.

Have your battery tested before winter arrives. Most batteries last three to five years, so if yours is approaching that age, consider replacing it proactively rather than waiting for it to fail on the coldest morning of the year. Check that the terminals are clean, tight, and corrosion-free—a loose or corroded connection can prevent starting just as effectively as a dead battery.

Antifreeze: Protection Against the Freeze

Your cooling system does more than just prevent overheating in summer—it also protects your engine from freezing damage in winter. When water freezes, it expands, and frozen coolant can crack your engine block or radiator, causing thousands of dollars in damage.

Have your coolant tested to ensure it's properly mixed and can protect against the lowest temperatures you're likely to encounter. The ideal mixture is typically 50/50 antifreeze and water, which protects down to around -34°F while also providing optimal corrosion protection.

Also check for leaks, inspect hoses for cracks or soft spots, and ensure all clamps are tight. A cooling system failure in winter is just as problematic as one in summer—your heater won't work, and you risk engine damage.

Tires: Your Connection to the Road

When roads are wet, icy, or covered in snow, your tires become even more critical to your safety. Check your tire tread depth using the penny test: insert a penny into the tread with Lincoln's head upside down. If you can see the top of his head, your tread is too worn and needs replacement.

Winter tires aren't just for snow—they're formulated to remain flexible and maintain grip in cold temperatures where all-season tires become harder and less effective. If you live in an area with regular winter weather, dedicated winter tires are one of the best safety investments you can make.

Don't forget to check tire pressure regularly. Cold weather causes tire pressure to drop—typically about 1 PSI for every 10-degree temperature decrease. Underinflated tires reduce traction, handling, and fuel economy.

The technicians at Gerties Garage can inspect your tires, check pressure, and help you decide whether your current tires will safely get you through winter or if it's time for replacements.

Wiper Blades and Washer Fluid: Visibility Matters

You can't drive safely if you can't see. Replace worn wiper blades before winter—they should clear your windshield in one pass without streaking, chattering, or missing spots. Some drivers prefer winter wiper blades, which have a rubber boot that prevents ice and snow buildup.

Switch to winter-grade windshield washer fluid rated for sub-zero temperatures. Regular summer fluid will freeze in your reservoir and lines, leaving you unable to clean your windshield when you need it most. Fill your reservoir completely—you'll use washer fluid much more frequently during winter's salty, slushy conditions.

Oil: Cold Weather Considerations

Oil thickens in cold weather, making it harder for your engine to turn over and reducing lubrication effectiveness until the engine warms up. If you live in an area with harsh winters, consider switching to a lower-viscosity oil that flows better in cold temperatures.

Check your owner's manual for cold-weather oil recommendations. Many modern vehicles use synthetic oil, which performs significantly better in extreme temperatures than conventional oil.

If you're due or nearly due for an oil change, get it done before winter sets in. Fresh oil provides better cold-weather performance and protection.

Belts, Hoses, and Fluids

Cold weather reveals weaknesses in aging belts and hoses. A serpentine belt that's showing cracks or glazing might hold up in summer but fail when temperatures drop. Rubber hoses become brittle in cold weather and can crack or burst.

Have a mechanic inspect all belts and hoses for wear. Replacing a $30 belt is much cheaper and more convenient than dealing with a breakdown.

Check all fluids—brake fluid, power steering fluid, transmission fluid—and top them off as needed. Low fluid levels can cause problems that are exacerbated by cold weather.

Heater and Defroster: Comfort and Safety

Your heater isn't just about comfort—it's essential for defrosting windows and maintaining visibility. Test your heater and defroster well before you need them. If they're not working properly, have the system inspected.

Also check your cabin air filter. A clogged filter reduces heating and defrosting effectiveness and can make the interior uncomfortably musty.

Emergency Kit: Be Prepared

Even with perfect preparation, winter emergencies can happen. Keep an emergency kit in your car with:

• Blanket or sleeping bag

• Flashlight with extra batteries

• First aid kit

• Jumper cables or portable jump starter

• Ice scraper and snow brush

• Small shovel

• Sand or cat litter (for traction)

• Non-perishable snacks and water

• Phone charger

• Reflective warning triangles

Lights: Shorter Days Need Brightness

Winter means more driving in darkness. Test all your lights—headlights, taillights, brake lights, turn signals—and replace any burnt-out bulbs. Consider upgrading to brighter bulbs if your headlights seem dim.

Clean your headlight lenses if they're cloudy or yellowed. Oxidized lenses significantly reduce light output and visibility.

Don't Wait Until It's Too Late

The best time to prepare your car for winter is before winter arrives. Waiting until the first snowfall or the coldest week of the year means competing with everyone else for mechanic appointments and potentially getting stuck with a breakdown at the worst possible time.

Take an afternoon now to go through this checklist, and you'll drive through winter with confidence, comfort, and safety.

Name: Galloping Gerties Garage
Address: 10421 Burnham Dr Building #3; Unit C, Gig Harbor, WA 98332
Phone: (253) 649-5984