How to Quickly Separate Water from Diesel Fuel?
2 Answers
Under normal temperature and pressure, the density of diesel fuel is lower than that of water. You can let the mixed solution stand still to separate diesel from water. Alternatively, you can place the container over a flame. Since water has a much lower boiling point than diesel fuel, the water will evaporate before the diesel when heated.
Last time my car's fuel tank got some water in it, mixing water with diesel, and the engine shook badly when driving. To quickly separate water from diesel, the simplest method is to find a clean container, pour the mixture in, and let it sit for a few hours. Due to its higher density, water will sink to the bottom, and then you can carefully siphon off the clear diesel from the top. If you're in a hurry, you can try a water-separating funnel, which costs just a few dozen yuan on Taobao. The operation involves pouring the mixed fuel into the funnel, and the water automatically separates to the bottom for draining. Another more professional method is to add a dehydrating agent, such as a methanol-based fuel additive, which quickly forms an interface for separation after mixing. Never start the engine—serious water contamination can damage the fuel injectors. When refueling, always check the fuel tank cap seal, and be cautious of water seepage during rainy days. Prevention is better than cure, and regular fuel tank cleaning can also avoid such troubles.
