Is there any danger in filling up the gas tank in summer?
2 Answers
It is not recommended to fill the car's gas tank to the brim during summer. Hazards of overfilling: Overfilling the tank causes gasoline to evaporate faster: Rapid gasoline evaporation first leads to energy waste, and the evaporated gasoline fumes can enter the cabin, which may affect human health with long-term exposure. Overfilling the tank can severely reduce the performance of the carbon canister: This ultimately leads to issues such as engine shaking and increased fuel consumption. Safety risks: The car's gas tank has a vent hole at the top. If the tank is filled to the brim, gasoline can easily overflow from the vent hole. If there happens to be an open flame nearby, the spilled gasoline is highly flammable.
Filling up the gas tank completely in summer does pose potential risks. As someone who works with cars year-round, I've seen many instances of fuel overflow due to overfilled tanks in high temperatures. Fuel expands when heated, and the increased volume can cause leakage from the tank opening—this not only dirties the car body but also poses a fire hazard if spilled fuel comes into contact with hot exhaust pipes or the engine. Moreover, overfilling can damage the vehicle's evaporative emission control system components, especially the charcoal canister, which is responsible for recycling gasoline vapors. Repairing a damaged canister is costly and environmentally unfriendly. I recommend not filling the tank to the brim in summer, leaving about a quarter of space for fuel expansion to ensure safety and protect the vehicle. Additionally, refueling during cooler evening hours can minimize expansion issues. Remember, safe driving starts with attention to detail—small habits prevent big problems.
