Is it unsafe to fill up the gas tank in summer?
2 Answers
Filling up the gas tank in summer can be unsafe. The hazards of overfilling the gas tank in summer include: 1. Driving risks: The gas tank has a vent hole at the top. If the tank is filled to the brim, gasoline can easily overflow through the vent hole. If there happens to be an open flame nearby, the overflowing gasoline can easily catch fire. 2. Tank deformation: The gas tank's capacity needs to leave some space to prevent gasoline expansion. Overfilling the tank, combined with exposure to the sun and thermal expansion, can cause the gasoline to expand in volume, potentially deforming the tank. 3. Performance impact: More gasoline means increased vehicle weight, requiring the engine to consume more fuel to move the car.
I've been driving for over 15 years, and I believe filling up the tank in summer is generally safe, but you need to pay attention to some details. Gasoline expands in high temperatures, and if you overfill the tank—like forcing more fuel after the automatic nozzle clicks off—it can lead to spillage or vapor leaks, increasing safety risks. Especially in hot weather, high temperatures and increased pressure inside the fuel tank can cause issues if there's no room for expansion. Living in the south where summer temperatures often exceed 35°C, I always stop at the first click and never force a full tank; this not only ensures safety but also protects the environment by reducing gasoline evaporation. Additionally, checking that the fuel cap is properly sealed is crucial to prevent any potential leaks. Overall, filling up isn't dangerous by itself—the key is doing it correctly and not cutting corners to avoid hazards.
