
It is acceptable to refuel with 100 yuan each time, but it should be determined based on specific circumstances. Since a car's fuel tank has a certain capacity limit, it is generally advised not to fill it completely. When the fuel level drops to one-quarter, it's time to refuel. If the driving distance is short and the gas station is nearby, you can add less fuel. However, if you are planning a long trip or refueling is inconvenient, it is recommended to add more fuel to avoid unnecessary gasoline consumption. The optimal fuel level should be around three-quarters of the tank's capacity, which is typically when the fuel nozzle clicks off for the first time during refueling. This approach does not place excessive burden on the car and does not affect its lifespan.

I only add 100 yuan worth of fuel each time, mainly to control my budget and prevent fuel expenses from exceeding my plan, which helps me better manage my personal spending. If fuel prices are high, this amount may only be enough for about ten liters of fuel, which isn’t very durable, especially during long-distance driving, requiring frequent stops at gas stations to refuel, which is quite time-consuming. If the fuel tank is often half-empty, the fuel pump relies on the fuel for cooling, and insufficient fuel can lead to poor heat dissipation, potentially shortening its lifespan and resulting in additional repair costs. It’s advisable to adjust based on daily travel needs—for example, this approach may work for city commuting, but filling up the tank before highway driving is more reliable. Additionally, frequent small fuel top-ups can increase the risk of stirring up deposits in the fuel tank, potentially affecting engine performance.

I believe that adding 100 yuan worth of fuel each time is not the optimal approach, especially for the mechanical parts of a car. The fuel pump relies on gasoline for cooling, and maintaining a consistently low fuel level in the tank can lead to poor heat dissipation, accelerated wear, and in severe cases, costly repairs due to damage. Low fuel levels also increase the risk of sucking up sediment and water from the bottom of the tank, which can cause engine deposits or clog fuel injectors. Through practical experience, I've found that maintaining at least a quarter tank of fuel helps protect the fuel pump and minimizes issues with contaminants. Filling up the tank completely reduces the frequency of refueling stops, saving time and offering better overall cost efficiency. During periods of fuel price fluctuations, avoid fixed 100-yuan top-ups; instead, calculate by liters for greater accuracy—for example, adding around 15 liters each time ensures efficiency.

Adding 100 yuan worth of fuel at a time is acceptable, but ensure the fuel level doesn't run too low. While driving, I monitor the fuel gauge to avoid waiting until the fuel warning light comes on, as sudden engine stalling could lead to accidents. The fuel system requires a certain amount of fuel to cool the fuel pump, and too little may cause overheating. For short city trips, this method helps track expenses conveniently, while for long-distance travel, filling up sufficiently avoids frequent refueling delays. The sensible approach is to maintain the fuel level above the safe range with each top-up, adjusting based on actual needs.

I'm used to adding small amounts of fuel each time, like 100 yuan, which feels convenient and cost-effective, especially when fuel prices fluctuate, offering better control. However, keeping the tank half-empty increases engine strain as the fuel pump doesn't cool completely, leading to overheating and aging. Frequent refueling may also stir up sediments, affecting fuel quality. Compared to filling up, this approach adds extra time and gas station costs, and from an environmental perspective, it's less carbon-efficient than reducing station visits. It's recommended to decide based on your car model and driving habits. Generally, keeping the fuel gauge above half strikes a balance between convenience and protection, avoiding sacrificing car health purely for savings.


