Do Sedans Need to Warm Up in Winter?
2 Answers
Sedans need to warm up in winter, requiring idling for about a minute before driving slowly. The reasons are as follows: 1. At ignition: The upper part of the engine is in a state without oil and lacks lubrication. It takes about 30 seconds after starting the engine for the oil pump to deliver oil to components such as the pistons, connecting rods, and crankshaft. 2. After starting the vehicle: If idling lubrication is not adequately supplied, wear can easily occur. Most engine component wear happens within the first three minutes after a cold start. After sitting overnight, the lubricating oil on the friction surfaces has mostly dissipated, losing its protective oil film.
As a veteran driver with over a decade of experience, especially having endured harsh northern winters, I've found that modern cars don't require prolonged warm-up in winter. In the past, it was habitual to idle for 5 minutes until the engine felt warm before driving off, but this was actually a misconception from traditional beliefs. Today's vehicles employ highly efficient lubrication systems where engine oil circulates rapidly - just waiting 30 seconds after startup is sufficient. Driving gently allows the engine to warm up under motion, which is actually better for the vehicle and improves fuel efficiency. Excessive idling wastes gasoline, increases emissions, and harms the environment. My personal advice: after starting, avoid aggressive acceleration and drive steadily at low speed for a while - this protects the engine while enhancing safety. Particularly during smoggy conditions, you can quickly defrost the windshield using the AC system to ensure clear visibility for safer driving. Don't follow outdated advice that only wastes fuel and time.
