1. Engine Compatibility: Most modern small engines are designed to run on gasoline containing up to 10% ethanol. Refer to the manufacturer's recommendations or owner's manual to verify the specific fuel requirements for your lawn mower engine.
2. Moisture Absorption: Ethanol has a higher affinity for water compared to traditional gasoline. Over time, ethanol-based fuel can absorb moisture from the surrounding air or when exposed to humidity. This moisture can lead to phase separation, where the ethanol and gasoline separate and can cause issues with fuel delivery and performance.
3. Fuel System Compatibility: While most small engine fuel systems are compatible with E10 fuel, some older or poorly maintained fuel systems may not handle ethanol well. Ethanol can degrade certain materials used in fuel lines and gaskets over time, potentially causing leaks or issues with the fuel delivery system.
4. Fuel Storage and Stability: Ethanol-based gasoline has a shorter shelf life compared to pure gasoline. When left unused for extended periods, the ethanol can attract water and degrade, leading to fuel-related issues. It is recommended to use fresh fuel, especially if you plan to store your lawn mower for a significant amount of time.
5. Cold Weather Performance: Ethanol can affect the cold-starting ability of an engine, particularly in extremely cold climates. Ethanol's lower vapor pressure can make it more difficult to vaporize and mix with air during startup. This can lead to hard starts or poor engine performance in cold weather conditions.
If you're concerned about using ethanol-based gasoline in your lawn mower, consider the following tips:
- Use fresh fuel.
- Avoid leaving fuel in the tank during long periods of non-use.
- Opt for ethanol-free gasoline if available and recommended by the manufacturer.
- Consult with a qualified small engine mechanic or refer to the manufacturer's recommendations for any specific concerns or issues related to ethanol-based fuel.
