Should the engine be turned off when refueling the car?

[SanWalker]

Vehicles must be turned off when refueling. This is because gasoline and its vapors have very low ignition points and flash points, requiring minimal energy to ignite. Below are precautions for car refueling: 1. Refuel promptly: The fuel pump generates heat during operation. Insufficient fuel prevents timely cooling, accelerating wear. It's advisable to refuel when the tank is down to one-quarter. 2. Fuel quality: Always choose reputable gas stations, preferably state-owned ones. 3. Octane rating: Pay attention to the required octane rating, usually indicated on the fuel cap. While a car requiring 95 octane can run on 92, prolonged use may affect performance. 4. Fuel quantity: Avoid overfilling to minimize trips to the station. Stop at the first click of the nozzle, indicating the tank is approximately 80-90% full. This leaves adequate space for fuel vapor expansion.