Can gasoline be stored in a car tank for a long time?
2 Answers
Gasoline should not be stored in a car tank for an extended period. Gasoline contains components with unstable properties, such as olefins, especially dienes, which are even more unstable. Over time, these substances can form gum-like materials that affect the fuel's performance. Gasoline does not deteriorate in the short term, but it is highly volatile. Therefore, it is recommended to store gasoline in a sealed container to prevent both deterioration and evaporation. If gasoline is stored for too long, oxidation can produce gum, which can cause valves to stick and not close properly. At high temperatures, the gum decomposes into carbon deposits that accumulate on components like fuel lines, leading to poor engine performance. Gasoline stored in a tank for up to ten days will not significantly deteriorate. However, if the car is parked for more than a month, it is advisable to drain and clean the fuel tank before starting the engine.
I found that leaving gasoline in the fuel tank for too long is really bad. It slowly oxidizes and deteriorates, forming gummy substances that can clog the fuel lines, making the engine hard to start, and even damaging the fuel injectors. Gasoline containing ethanol is particularly prone to absorbing moisture, which can lead to rust issues. I once experienced a squeaky noise when starting my car after it had been parked for two months, and it turned out to be due to aged gasoline. The shelf life is usually just one to three months, after which the risks increase significantly. For safety, it's advisable to either drain the fuel tank or add a stabilizer before long-term parking to avoid costly repairs.
