July 19, 2024

How to winterize your car

6 min read
How to winterize your car

The cold is upon us, and just like your pets need certain concessions when Jack Frost comes to visit, your car does, too. We put together prime winterization tips, and got some additional advice from Richard Reina, the product training director at online vehicle parts portal CARiD.com.

Winterization tasks fall into two categories: Car care and personal safety. Both are important, most will change the winter driving experience. We’ll start with personal safety since that helps you and your car survive the season.  

SWITCH TO WINTER TIRES

Read More: Best snow tires for winter 2022 and 2023

Every knowledgeable source we know of recommends winter tires. YouTube is full of videos demonstrating how much better winter tires perform than all-season tires in snow and ice. Accelerating, steering, and braking are improved by winter tires.

We know you paid extra for all-wheel drive so you could avoid this step. But AWD is half of the winter driving equation. Richard Reina said, “Those AWD drivetrains may provide extra traction, but they provide no help with steering or braking on slippery surfaces.” That is, AWD can send power to the wheel with the most grip. If no tire will grip, AWD is useless.

Winter tires use rubber compounds formulated to resist hardening in freezing temps, maintaining their elasticity and grip when everything else outside – like an all-season tire – is getting hard and slippery. Their tread patterns are designed to clear snow and slush.

No matter which tires are on your car, make sure they have sufficient tread and they’re inflated to the proper pressure. That’s a tip for year-round, not just winter.

WINTER WIPERS AND WASHER FLUID

Read More: How to change wiper blades and washer fluid

Windshield wipers are made of rubber products just like tires, so consider buying winter wipers designed to stay more pliant. Having a blade leave a slushy streak on the windshield every time it travels is annoying and potentially dangerous.

Keep an extra set of blades in the car (ideally) or at home. Blades should be changed every six to 12 months, Reina saying “The 6-month regimen is best conducted every spring and fall.” You don’t want to wait until frozen rain starts falling to find out you need new wipers. Ask any auto parts store employee – that’s when the stampede begins. Reina recommends Bosch blades like the Snow Driver, saying, “Beam style blades tend to fare better in the winter: their design makes it difficult for snow and ice to accumulate.” Another good option are Rain-X Latitude blades “that introduced water repellency, doing a better job of pushing moisture off the glass than other blades,” and that don’t have traditional metal frames that can freeze. For a budget option, try Aero all-season blades that come with a six-month money-back guarantee. 

And a reminder from Reina, “Don’t forget the rear wiper on wagons and SUVs.”

While you’re at the auto parts store, spend the extra few dollars to buy a couple of bottles of washer fluid, and keep your car’s fluid reservoir full.

PACK A WINTER SAFETY BUNDLE

It wasn’t 12 months ago I was sitting on the side of the highway in my Corvette after a snowstorm. I’d broken the unwritten rule of having the wrong car for the drive, as well as the rule I just wrote about having snow tires. I didn’t have any safety gear in the car, either, and only a quarter tank of gas. My plan — the only one available — was to sleep in the two-seater for 36 hours, running the engine intermittently, until the weather warmed enough to melt the ice on the road.

Don’t be like me.

Pack a small duffle with items that can get two people sheltered in place in a car for 48 hours. The essentials are a blanket or sleeping bag, hat and gloves, energy bars, canned food and can opener, first aid kit, and phone charger. Water is always a good idea, but fill any container only halfway; you need to leave space for freezing water to expand. Don’t use a thermos, it will want to keep any frozen water frozen. To go all the way with prepping, add flares, triangle reflectors, a safety vest, and a foldable shovel. If you have an older car with mechanical locks, a glycerine de-icer isn’t a bad idea as long as you can keep it outside the car.

You should always have an ice scraper with a brush. And please scrape your headlights, taillights, and roof, too! You should always carry jumper cables, a flashlight, extra fuses, a small funnel, a tire pressure gauge, and a spare key hidden outside the car year-round.

Those are the personal safety tips. Grip and good visibility can be life and death matters all year round, but especially in winter. Now for the car care tips.

Car Battery Repair - Connecting Jumper Cables

HAVE THE BATTERY CHECKED

Your car’s 12-volt battery hits its maximum output when the ambient temperature is about 80 degrees Fahrenheit. Output drops with the temperature just like with electric vehicle batteries, so the battery works harder in winter to start the car. Get your battery tested to make sure it’s putting out the proper voltage during cranking and at idle. And take five minutes to clean the terminals if they’re covered in corrosion.

CHANGE TO LIGHTER ENGINE OIL

Read More: How to change your engine oil and filter

Oil thickens up in the cold, forcing the battery to work harder to start the car. Thick oil also takes longer to get into the places it needs to protect, and most engine wear happens at startup. Check your owner’s manual for recommendations about which oil to use at which temperature range. Some manuals advise switching to a lighter weight in cold climates.

If you drive a diesel and you’re a 15W-40 user, your engine will thank you for swapping to lighter oil weight even if you use a block heater. Make sure differentials and transfer cases are topped up with their recommended oils.

While you’re in the manual, check for coolant recommendations, too.

WASH YOUR CAR

Unless you live where it doesn’t snow or where snow crews use sand instead of salt, wash and wax your car before winter sets in and wash the car regularly throughout winter. The combination of water, grit-filled slush and ice, and salt acts like sandpapery solvent on metal and paint. If you use an automated car wash, splurge for the undercarriage wash. Your car’s resale value and your bank account will thank you.

FUEL TIPS

Diesel fuel contains paraffin wax. When the mercury drops, the wax begins to solidify, turning the fuel from waxy to cloudy to gelled depending on the temperature. Diesel also has a higher water content than gasoline, so in freezing temps ice crystals can jam up the fuel filter or, if equipped, the water separator. Get some fuel additive in the tank before the temperature hits the floor.

No matter gas or diesel, try not to let the tank get below one quarter full, at worst.

If you’re locking a car away for the winter, Reina recommends a stabilizer. “Vehicles stored for four to six months will have old fuel in them by the time driving season comes around again. The use of a fuel stabilizer will prevent fuel from becoming gummy.”

EV TIPS

Read More: Cold weather can wreak havoc on EV range, but these electric cars do best

Range will suffer in the winter, that’s unavoidable. Maximize what the battery can provide by using your pre-conditioning features while the EV is still plugged in. Steps as small as treating your windshield with de-icing and defogging treatments can reduce the time you need to use the defroster while traveling – saving a 7-kW draw on the battery and boosting range.

If it’s easy to pull into a charging space while you’re running errands, do so, even if you have plenty of range left. The EV can use grid power to keep the battery and interior warm. And don’t let the battery get below 20{5be0972a10a00bb621c1a18de1a801d58662e556d02921cebb422beac5e5b2fe} if you can avoid it.

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