Do Sedans Need to Warm Up in Winter?
1 Answers
Sedans need to warm up in winter, requiring idling for one minute before driving slowly. The reason is that immediately after ignition, the upper part of the engine lacks lubrication as oil has not yet circulated. It takes about 30 seconds after starting the engine for the oil pump to deliver oil to critical components such as pistons, connecting rods, and the crankshaft. When the vehicle starts, lubrication is not yet fully supplied during idling, making it prone to wear. Most engine component wear occurs within the first three minutes of a cold start. After sitting overnight, the lubricating oil on friction surfaces has largely drained away, leaving them without protective oil film.