When is the Best Time to Refuel?
3 Answers
It is generally advisable to refuel when the fuel level drops to one-quarter of the tank's capacity, and it's best to fill up only about two-thirds of the tank. This might differ from the common practice of filling the tank completely, but there are valid reasons for this approach. Refueling when the fuel level reaches one-quarter ensures that the vehicle won't run out of fuel unexpectedly. Additionally, the fuel pump inside the tank may become exposed to air if the fuel level is too low, leading to insufficient cooling and potential damage to the pump. Repairing a damaged fuel pump can be quite costly. As for why it's recommended to fill only two-thirds of the tank, gasoline is a volatile substance. Overfilling the tank can cause gasoline vapors to increase the internal pressure, leading to fuel leakage. This not only wastes gasoline but also increases unnecessary fuel expenses. Moreover, in the presence of an ignition source, this could easily lead to a fire, potentially causing severe injuries or fatalities, resulting in significant losses.
With over 30 years of driving experience, I've learned to refuel when the tank reaches one-quarter full. Why so early? Running too low increases the risk of roadside breakdowns, especially on highways or rural roads where assistance is difficult and may lead to accidents. The fuel pump at the tank bottom relies on gasoline for cooling – letting it run dry risks overheating damage. I once waited until the warning light came on and ended up paying over 1,000 yuan for pump repairs. Now I make it a habit to refill whenever the gauge shows one bar remaining. This protects the vehicle, extends its lifespan, and avoids emergency repairs. Before long trips, I always check to maintain at least half a tank for peace of mind. Even for city driving, don't procrastinate – top up when you notice low fuel levels for safety and convenience.
As someone who pays close attention to car maintenance, I recommend refueling before the fuel level drops to a quarter, rather than waiting for the warning light to come on. The key is to protect the fuel system: the fuel pump is located at the bottom of the tank, and insufficient cooling when fuel is low can easily cause it to burn out. Although modern cars have reminder systems, when the light comes on, it indicates the fuel level is critically low, and you should add fuel promptly without hesitation. I learned this the hard way—once ignoring it led to a pump failure, costing over 800 yuan for a replacement and wasting time. Now, I make it a habit to check the fuel level weekly and refuel when it drops below a quarter to avoid frequent low-fuel driving. This practice extends the vehicle's lifespan and reduces repair costs. Additionally, as the weather gets hotter, fuel evaporates faster, so refueling earlier is more reliable.
