Winter driving comes with its fair share of challenges—icy roads, reduced visibility, and of course, those dreaded cold starts. Over the years, plenty of myths have popped up about how to care for your vehicle in freezing temperatures. Some are harmless, while others could be causing unnecessary wear and tear on your car. Let’s set the record straight on some of the most common cold start myths and what you should actually do to keep your vehicle running smoothly all winter long.
- Myth: You need to let your car idle for 10-15 minutes before driving.
Reality: In the past, cars with carburetors needed extended idling to warm up properly. But modern vehicles with fuel injection and electronic ignition systems don’t require this. Letting your car idle for 30 seconds to a minute is usually enough to get the oil circulating. In fact, gently driving your car right after starting it warms up the engine and transmission faster than prolonged idling—and it’s better for fuel efficiency too.
- Myth: Your battery will freeze if you don't start your car daily.
Reality: A fully charged battery can handle temperatures as low as -60°C. The real issue is a weak or partially discharged battery, which struggles to perform in cold weather. If your vehicle sits for days without use, the battery could lose charge over time, but starting it daily for no reason doesn’t help much. Instead, consider a battery maintainer or charger if your car sits unused for extended periods.
- Myth: You should rev the engine right after starting to warm it up faster.
Reality: Revving a cold engine can cause unnecessary wear and tear, as the oil hasn’t fully circulated yet. It’s best to let the engine idle briefly before driving gently. Avoid hard acceleration or high RPMs until the engine reaches its optimal operating temperature.
- Myth: Premium fuel is better for winter starts.
Reality: Unless your vehicle specifically requires premium fuel, using it won’t make cold starts easier or improve performance in winter. Stick to the manufacturer-recommended octane level. Instead, focus on ensuring your fuel system is clean and your tank isn’t running low to prevent condensation or freezing.
- Myth: Block heaters aren’t necessary if the car starts fine without them.
Reality: While it’s true many vehicles can start in cold weather without a block heater, using one has significant benefits. A block heater warms the engine oil, making it easier for the engine to turn over and reducing wear and tear. It also improves fuel efficiency and helps the cabin warm up faster. If temperatures regularly dip below -20°C, a block heater is a worthwhile investment.
- Myth: Oil doesn’t freeze, so cold starts don’t affect it.
Reality: While motor oil doesn’t freeze solid, it does thicken in cold temperatures, making it harder for the engine to circulate it properly. This can lead to increased wear on engine components. Always use the correct winter-rated oil (such as 0W-20 or 5W-30) as recommended by your vehicle’s manufacturer.
- Myth: It's fine to leave snow and ice on the car while warming it up.
Reality: Leaving snow or ice on your vehicle while it idles may seem harmless, but it can lead to safety hazards. Snow on the roof can blow off and hit other drivers, and ice-covered windows reduce visibility. Always clear your vehicle fully before driving to ensure safety for you and others on the road.
- Myth: Cranking the heat while warming the car helps it heat up faster.
Reality: Your car’s cabin heat relies on the engine warming up first. Turning the heater on full blast right away doesn’t help and might even slow the process by pulling heat from the engine. Wait a couple of minutes after starting the car before turning on the heat for faster and more efficient warming.
Winter weather can be tough on your vehicle, but knowing the facts can save you time, money, and unnecessary stress. Stick to manufacturer recommendations, invest in a block heater if needed, and remember that driving gently is the best way to warm up your car. By debunking these common cold start myths, you can keep your vehicle in great shape and enjoy a smoother winter driving experience.