What are the effects of adding a bottle of mineral water to a car fuel tank?

[MacNova]

Adding a bottle of mineral water to the fuel tank may damage the engine. Fuel tanks can be divided into two types: open tanks and closed tanks. Open tanks have their liquid surface in contact with the atmosphere, and an air filter is installed on the tank cap. Open tanks are simple in structure and easy to install and maintain, making them commonly used in hydraulic systems. Closed tanks are generally used for pressurized fuel tanks, filled with a certain pressure of inert gas, with a charging pressure of up to 0.05MPa. Precautions for using the fuel tank are as follows: 1. Do not wait for the yellow light to come on before refueling: Drivers should check the fuel gauge before driving and calculate whether refueling is needed during the trip based on the distance and the fuel gauge reading. It is advisable to refuel in advance and not wait until the fuel light comes on. The fuel pump is located inside the fuel tank, and it generates high temperatures during continuous operation. Being immersed in fuel helps to cool it effectively. When the fuel light comes on, it indicates that the fuel level is below the fuel pump. Refueling only when the light comes on will shorten the lifespan of the fuel pump, 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 the vaporization point of gasoline is relatively low, so it is better to refuel during these times. Gasoline has the property of thermal expansion and contraction, and it is charged by volume. At lower temperatures, gasoline has a relatively higher density, and the mass per unit volume also increases, resulting in more fuel being added; 3. Avoid filling the tank completely when driving in the city: When driving in urban areas, there is no need to fill the fuel tank completely. A full tank increases the engine load and fuel consumption. Since refueling is convenient in the city, there is no need to fill the tank to the brim.

[JaydenLee]

I saw someone adding mineral water into the fuel tank, which is simply disastrous. Water is heavier than gasoline and will sink to the bottom, getting sucked in by the fuel pump. Water pumps can't handle water, leading to clogs or rust. When the engine starts, the fuel injectors might spray water instead, causing stalling or failure to start. I once witnessed a neighbor adding half a bottle of water, and the car broke down halfway. The repair costs weren't cheap—complete drainage, tank cleaning, and fuel filter replacement were needed. In severe cases, it can damage fuel injectors and the fuel pump, costing thousands to fix. Additionally, rust on the inner tank walls can contaminate the fuel, affecting long-term performance. In short, never try this. Always check that the fuel filler is clean before driving. Just use regular gasoline and keep the system dry.

[ReaganAnn]

The thought of adding mineral water to the fuel tank makes me panic. Water mixing with gasoline can cause the engine to ingest moisture. As a non-combustible substance, water evaporates when the combustion chamber temperature rises, diluting the air-fuel mixture. This leads to reduced power, engine shaking, or even stalling. Imagine how dangerous it would be to suddenly stop on the highway! It might also damage piston rings or the cylinder block. I once heard of a case where a car was towed to the shop after accidentally adding a bottle of water. Upon disassembly, it was found that the spark plugs were corroded by water. The repair took half a day, involving fuel tank cleaning and oil replacement. For routine maintenance, it's crucial to regularly inspect the fuel system. If water traces are detected, use professional water removers. Develop the habit of cleaning the fuel tank cap before refueling to prevent debris from entering.

[Marie]

I once accidentally added a little water to the fuel tank, and the consequences were terrible. The water accumulated at the bottom, and the fuel pump sucked in water while working. The engine would have difficulty starting or even stall directly because the fuel couldn't burn properly. You might still be able to drive short distances, but it would cause long-term damage to internal parts. For example, clogged fuel injectors could lead to unstable acceleration. That time, it took me a whole day to get it fixed. The repair shop used an oil extractor to drain the water and also replaced the filter. Similar mistakes require stopping the vehicle immediately and preferably towing it to a professional shop. During normal driving, be careful to avoid adding any non-fuel liquids.