Can gasoline still be used after sitting in the fuel tank for six months?

[StIsaac]

It is recommended to drain gasoline that has been sitting in the fuel tank for six months. There are two key indicators in gasoline quality metrics: Because there are two critical indicators in gasoline quality metrics: actual gum content and induction period, which reflect gasoline stability. When gasoline is stored for too long, it undergoes severe oxidation and forms gum. Gum can cause valves to stick and fail to close properly. At high temperatures, it decomposes into carbon deposits that accumulate on cylinder walls, piston tops, and cylinder heads, leading to poor engine performance, knocking, and increased wear. Special note: Particular attention should be paid to preventing the reduction of gasoline's anti-knock performance. When a car is parked for an extended period, the octane number of gasoline decreases due to the loss of light components and increased gum content, thereby reducing its anti-knock properties. Therefore, the fuel tank should be tightly sealed and kept away from excessive temperatures.