Importance of Choosing the Right Gasoline for Small Engines
The best fuel for small engines is fresh gasoline with no or low ethanol content. Using stale or ethanol-blended gas can damage engines over time. Ethanol attracts water and can break down in as little as 3 weeks, causing issues like vapor lock. It also reduces lubrication in 2-stroke engines. For long-term storage, ethanol-free gas stays fresh longer. Using the right gas improves starting, throttle response and performance. Consider a fuel stabilizer if storing gas over 30 days.
Recommended Gasoline for Small Engines
For most small engines, regular 87 octane unleaded gasoline is recommended. Higher octane is needed for some overhead valve engines. Premium non-oxygenated gas is not the same as high-octane racing fuel. What gas you use matters, so choose the recommended type for your equipment.
Impact of Ethanol on Small Engines
Ethanol-blended gas is especially harmful for two-stroke engines like chainsaws, trimmers, and leaf blowers. Two-stroke oil remains bonded to the gasoline but not to ethanol, leading to inadequate engine lubrication. Ethanol-free gas is the better option for numerous reasons, including improved efficiency and meeting emission standards.
Summary:
- Use fresh gasoline with no or low ethanol content for small engines.
- Consider manufacturer recommendations for fuel type.
- Avoid using gasoline with ethanol content higher than 10% in small engines.
- Ethanol-blended gas can damage two-stroke engines.
- Consider using ethanol-free gas for improved engine performance and longevity.