Yes, motorcycle gas can go bad over time. Fuel degradation occurs due to the chemical reactions and evaporation that can take place in the fuel. Several factors contribute to the degradation of gasoline:
Evaporation: Gasoline is a volatile liquid that can evaporate over time, especially if the fuel cap is not tightly sealed or if the motorcycle is stored in extreme temperature conditions. As the volatile components evaporate, the remaining fuel becomes less effective.
Oxidation: When gasoline is exposed to oxygen in the air, it undergoes oxidation, which can lead to the formation of varnish and gum-like substances. These deposits can clog fuel lines, carburetors, or fuel injectors, affecting engine performance.
Moisture absorption: Over time, gasoline can absorb moisture from the surrounding air. This can lead to the formation of water in the fuel, which can cause corrosion in the fuel system components, such as the fuel tank, fuel lines, or injectors.
Ethanol separation: Many fuels contain ethanol, which has a higher affinity for water. Over time, the ethanol can separate from the gasoline and absorb moisture, resulting in phase separation. This can lead to engine performance issues and damage fuel system components.
The extent of gas degradation depends on various factors, such as the quality of the fuel, the presence of additives or stabilizers, storage conditions, and the duration of storage. Generally, gasoline can start to degrade within a few months to a year.
To prevent gas from going bad, it is advisable to follow these practices:
Use fuel stabilizers: Adding a fuel stabilizer to the gas can help slow down the degradation process and extend the fuel's shelf life.
Store in appropriate containers: If you need to store gasoline for an extended period, use proper containers that are airtight, made for fuel storage, and designed to limit evaporation.
Store in a cool, dry place: Keep the fuel away from direct sunlight, heat sources, and extreme temperature fluctuations, as these can accelerate the degradation process.
Regularly cycle through fuel: If possible, try to use and replace the fuel in your motorcycle regularly, rather than letting it sit for extended periods.
If you suspect that the gas in your motorcycle has gone bad, it is generally recommended to drain the old fuel and refill the tank with fresh gasoline to maintain optimal engine performance and prevent potential issues.