What Happens If You Add a Bottle of Mineral Water to a Car's Fuel Tank?
2 Answers
Adding a bottle of mineral water to a car's fuel tank may lead to rusting of the cylinder pistons and, in severe cases, even cause dangerous consequences such as an explosion in the crankcase. Below are some precautions for refueling your car: 1. Refuel promptly: The fuel pump generates heat during operation. If the fuel level is too low, the pump cannot dissipate heat efficiently, accelerating its aging. Therefore, it's best to refuel when the tank is about one-quarter full. 2. Fuel quality: When refueling, choose reputable gas stations, preferably state-owned ones. 3. Octane rating: Always pay attention to the octane rating. The recommended fuel grade is usually indicated on the fuel tank cap. While a car designed for 95-octane can run on 92-octane gasoline, prolonged use may negatively affect the vehicle. 4. Fuel quantity: Avoid overfilling the tank to minimize trips to the gas station. Generally, stop refueling at the first click of the pump, as this indicates the fuel level is around 80-90% full. This leaves enough space in the tank to accommodate vapors from fuel evaporation.
Adding a bottle of mineral water to the car's fuel tank is no small matter. When I was learning to drive, my instructor told me that water is heavier than gasoline. Once it sinks to the bottom, starting the engine will draw in the water, which can't combust, leading to clogged injectors, engine shaking, or even stalling. The fuel pump and pipes can corrode, and over time, parts may be ruined. Especially now with more ethanol-blended gasoline, water can mix in more easily, exacerbating the problem. It's advised not to get distracted and leave drink bottles around when refueling. If water is accidentally added, do not ignite the engine—immediately take the car to a repair shop to drain and clean the system to avoid spending thousands on repairs and disrupting your trip. Regularly check the fuel tank cap's seal to prevent rainwater from seeping in.
