Is it better to fill up the gas tank or not?
2 Answers
It's better to fill the tank almost to full. If the fuel level is too low, the fuel pump won't be submerged in fuel, which can affect heat dissipation. Poor heat dissipation can shorten the lifespan of the fuel pump. Low fuel level: When refueling doesn't reach the nominal height, the vent valve remains open. Once the nominal height is reached, the valve closes, preventing gas from escaping, and the fuel level rises until the pump automatically stops. Keeping the car's fuel tank in a "half-starved" state for a long time can damage the vehicle. Frequent low fuel levels mean the fuel pump often runs dry on bumpy roads, causing the DC motor to overheat and overload, thereby shortening the fuel pump's lifespan. Refueling precautions: Petroleum products are flammable, explosive, and prone to static electricity buildup; smoking is strictly prohibited at the station; any activities that may produce sparks are forbidden; slapping synthetic fiber clothing is not allowed; direct filling of gasoline into plastic containers is prohibited; vehicles must be turned off while refueling; carrying hazardous materials is not allowed; mobile phone use is banned at the station.
I used to always fill up the gas tank completely, thinking it saved time and hassle. But later, I noticed that after each full fill-up, the car's weight increased significantly, equivalent to carrying an extra adult's weight, leading to noticeably higher fuel consumption. Over time, filling up the tank actually cost more money than filling it to 70-80%. Moreover, during hot summer days, gasoline tends to expand, and overfilling can cause overflow, damaging the carbon canister system—repairs can cost several hundred dollars. Now, I estimate my mileage and add just enough fuel, avoiding frequent gas station queues while protecting my car and saving on fuel costs. Calculated over a year, this approach saves a considerable amount of money.
