How long does 92 gasoline take to deteriorate in a car?

[EverettLynn]

92 gasoline will deteriorate if stored in a car for more than three months. It is recommended to store gasoline in a sealed container to prevent deterioration and evaporation. Gasoline indicators: There are two key indicators for gasoline quality: actual gum and induction period, which reflect gasoline's stability. If gasoline is stored for too long, it will oxidize severely and form 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. Composition of gasoline: Gasoline appears as a transparent liquid, primarily composed of C4~C10 hydrocarbons. It is classified into three grades based on research octane number: 90, 93, and 95. With high octane ratings and excellent anti-knock properties, it is used in high-compression-ratio carburetor gasoline engines to enhance engine power and reduce fuel consumption. It also features good volatility and combustibility, ensuring smooth engine operation, complete combustion, and minimal carbon deposits.