Is Idling Warm-Up Necessary?

[WilliamAnn]

Modern vehicles do not require idling warm-up. In fact, idling warm-up can harm your car. The reasons are: during idling, the engine oil pressure is relatively low, leading to poorer lubrication conditions. Additionally, unburned fuel washing the cylinder walls or incomplete fuel combustion can easily cause carbon buildup, accelerating wear on moving parts. Below are specific damages caused by idling warm-up: 1. Shortened engine lifespan: During idling, the fuel ignition preparation time is prolonged, and reduced cylinder sealing can easily cause knocking sounds, leading to a shorter engine lifespan. 2. Increased fuel consumption: At low engine speeds, fuel atomization is less effective, resulting in incomplete combustion and poor heat dissipation, which increases fuel consumption. 3. Damage to the catalytic converter: Prolonged idling leads to excessively rich air-fuel mixtures and low oxygen content in the exhaust. If the mixture does not fully burn at the catalytic converter, it can easily overheat and fail.