Will Fuel Overflow When Refueling a Fixed Amount?

[VivianAnn]

If you refuel a fixed amount, the fuel will not overflow when the tank is full. Here are the risks associated with fuel overflow: 1. Fire hazard: In hot weather, it can easily cause a fire. 2. Damage to parts: Spilled gasoline can soak surrounding components, causing certain damage. 3. Fuel tank expansion: Gasoline is volatile, and evaporation produces gases, especially when driving on bumpy roads. If the tank is filled to the point of overflow, there won’t be enough space to accommodate these gases, leading to tank expansion. If the tank’s vent is blocked, negative pressure can form inside the tank, potentially causing fuel supply issues in the vehicle.

[SarahAnn]

I've been driving for decades and have plenty of experience with refueling. Setting a fixed amount for refueling generally won't cause overflow because modern gas stations are equipped with automatic shut-off systems. When the gasoline fills up the tank, sensors trigger and the nozzle automatically stops dispensing fuel. Even if you set a specific amount, as long as it's within a normal range, it will stop before the tank is full. I remember one winter when I set 100 yuan for refueling, the machine stopped when the fuel gauge was nearly full, and nothing went wrong. However, I'd like to remind everyone not to get distracted by phones or leave while refueling. In case of equipment failure or vapor lock in the tank, it might cause a minor spill. In short, it's very safe under standard operations, but it's also a good habit to regularly check your car's fuel system.

[DiNolan]

As a family driver who takes kids out all year round, I'm not worried about fuel overflow with fixed-amount refueling. The key is that fuel pumps have smart controls that automatically cut off supply when the tank reaches capacity. But to be safe, don't set the amount too high. For example, in summer when temperatures rise, gasoline expands in the tank. While overflow is unlikely with a large amount, accidents can still happen. I always stand by and watch during refueling to ensure the nozzle is securely inserted. Additionally, I recommend new drivers or those with modified cars regularly check if the fuel cap is properly sealed to avoid vapor leaks. Safety first—small habits can protect both your vehicle and your wallet.

[JosephRose]

I usually choose the self-service mode for refueling, setting a fixed amount is very convenient. To be honest, it basically won't overflow. The fuel pump has a sensing device, and it will automatically stop when the tank is full, which is quite smart. Unless the equipment is broken or you manually hold down the nozzle forcefully, there might be a small issue. Last month, I set it to 50 yuan for refueling, and it stopped when the tank was full, no problem at all. However, it's best not to get distracted by other things while refueling. In short: feel free to use it.