Is it necessary to turn off the engine when parking for three or four minutes?

[JacksonDella]

It is better to turn off the engine when parking for three or four minutes, as this saves fuel and contributes to environmental protection. Disadvantages of not turning off the engine when parked: Increased fuel consumption: When the engine speed is very low, the intake vortex weakens, leading to poor fuel atomization and incomplete combustion. Additionally, at low engine speeds, valve leakage and piston ring leakage increase. Furthermore, the prolonged contact time between combustion gases and the cylinder walls increases heat loss, resulting in higher fuel consumption. Correct method for turning off the engine when parked: First, press the brake pedal. When the speed decreases to nearly a stop, press the clutch pedal, then firmly press the brake pedal to bring the vehicle to a complete stop.