Is it safe to refuel right after oil unloading at a gas station?
1 Answers
It is not advisable to refuel immediately after oil unloading at a gas station. When oil is just unloaded, water and impurities (including water, rust, etc.) at the bottom of the gas station's oil tank can be stirred up. If these are pumped into the car's fuel tank, they can cause hazardous incidents. Refueling at night is better than during the day. Besides avoiding the intense midday sun, refueling at night allows for more mass of gasoline for the same volume, as gasoline is billed by volume rather than weight, and it expands with heat and contracts with cold. Precautions for fuel tank usage are as follows: 1. Do not wait for the yellow light to come on before refueling: Before driving, check the fuel gauge and calculate whether refueling is needed based on the trip distance and the gauge reading. It's better to refuel in advance rather than waiting for the fuel light to come on. The fuel pump is located inside the tank and operates at high temperatures when continuously working. Being submerged in fuel helps to cool it effectively. When the fuel light comes on, it indicates the fuel level is below the pump. Frequently waiting until the light comes on to refuel can shorten the pump's lifespan, and having too little fuel in the tank may even burn out the pump. 2. Choose to refuel in the morning or evening: Generally, temperatures are lower in the morning and evening, and since gasoline has a low vaporization point, it's better to refuel during these times. Gasoline expands with heat and contracts with cold, and it is charged by volume. At lower temperatures, gasoline has a relatively higher density, meaning more mass per unit volume, resulting in more gasoline for the same volume. 3. Avoid filling the tank completely when driving in the city: For regular city driving, there's no need to fill the tank completely. A full tank increases the engine's load, leading to higher fuel consumption. Since refueling is convenient in the city, there's no necessity to fill the tank to the brim.
