When Should You Refuel Based on the Remaining Fuel in the Car Tank?

[StDaisy]

You should refuel when the car tank has a quarter of fuel left. The steps for refueling are: 1. Slow down and drive into the gas station gently; 2. Turn off the engine before starting the refueling process; 3. After filling up, close the fuel nozzle before restarting the car. Precautions for car refueling include: 1. Do not use mobile phones; 2. No smoking; 3. Park, turn off the engine, and shut down the power. The reasons for turning off the engine while refueling are: 1. When the engine is running, gasoline, being an electrolyte, can cause electrical leakage in instruments, leading to short circuits or open circuits; 2. The exhaust pipe continuously emits waste gas, which may carry sparks, posing a safety hazard; 3. Operating instruments generate a lot of heat, accelerating gasoline evaporation, increasing the concentration of fuel-air mixture, which is hard to disperse and can easily ignite or explode.