
Car should be refueled when the fuel gauge indicates one-quarter of the fuel remaining. Here is the relevant content introduction: 1. Generally, when the fuel light comes on, it means the fuel level has started to fall below the fuel pump, and the fuel in the tank is almost exhausted. When the fuel level is too low, the sediment remaining at the bottom of the tank will be drawn up for fuel supply, which can easily cause fuel line blockage or fuel pump obstruction. 2. Engine oil, motor oil, or engine lubricant is a substance enhanced with additives in base oil, mainly containing anti-wear additives, detergents, dispersants, and multi-grade oil viscosity index improvers. Engine oil is used for lubricating internal combustion engines. The main functions of engine oil are to reduce friction and wear of moving parts and to remove sludge (one of the functions of dispersants) and varnish (function of detergents) from the engine.

When the fuel gauge needle drops to the red zone, I know it's time to refuel. Generally, when the yellow fuel warning light comes on, you can still drive about 50 kilometers, but this reserve fuel capacity may vary depending on the car model. Driving on the highway with the air conditioning on in summer consumes the most fuel, so you need to visit the gas station earlier than usual. Experienced drivers know not to wait until the last moment. Once during rush hour, I was stuck on a bridge with almost no fuel left, too nervous to even turn on the AC, my palms sweating. It's recommended to refuel when the tank is down to a quarter, especially before heading to unfamiliar routes—checking the fuel level is a must, as finding a gas station can be quite troublesome.

I'm used to refueling a fixed amount each time, which makes calculating fuel consumption very convenient. Before long trips, always fill up the tank, especially when driving through mountainous or remote areas where you might not see a gas station for 100 kilometers. For daily commuting in the city, I start thinking about refueling when the remaining range shows less than 80 kilometers. In winter, when temperatures are low, the fuel pump relies on gasoline for cooling, and driving with low fuel levels for extended periods can damage the fuel pump components. Developing a habit of checking the fuel gauge before starting the car can save a lot of trouble.

Beginners should pay attention to the fuel tank cap symbol—the side where the triangular arrow points indicates which side the fuel nozzle should be on. I often use my to record the mileage after each refueling to calculate the actual fuel consumption. Waiting until the remaining range starts flashing is too late—it can be really frustrating if you get stuck in traffic. An experienced mechanic taught me to check the fuel tank float gauge, as older cars' fuel gauges aren't always accurate. In fact, keeping the fuel tank half full is best for the fuel pump, and sediment impurities are less likely to clog the fuel lines.

When the fuel light comes on, quickly find a gas station, but don't floor the throttle to save fuel—steady driving is more practical. My old car could last about 70 kilometers on the highway after the light came on, but in the city with the AC on, it might stall after just 30 kilometers. When I first got the car, I didn't know better and drove about 10 kilometers after the fuel gauge hit empty, which ended up burning out the fuel pump. Now, as soon as the yellow warning light appears on the dashboard, I immediately navigate to the nearest gas station. Some newer cars even have a voice reminder feature, which is quite handy. Remember, gasoline expands and contracts with temperature, so don't fill the tank too full in the summer.

I set Thursday as my regular refueling day to avoid weekend queues. Once I forgot to refuel during a business trip, and the fuel gauge alarmed the next day while picking up a client, almost causing a delay. Now I always carry a spare fuel tank for long trips – last year’s self-drive to Inner Mongolia relied on this little green canister for emergencies. Gas station staff mentioned that fuel quality is cleanest between 4-6 AM, and I’ve found early morning refueling does last longer. It’s best not to wait for the fuel warning light; running too low risks sucking up sediment from the tank bottom, and clogged injectors can cost way more than a few hundred bucks to fix.


