What Is E10 Gas For Lawn Mower?

Photo of author

By Kirsi Jansa

E10 gas is a type of fuel that contains 90% gasoline and 10% ethanol. It’s a common fuel option for lawn mowers and other small engines. However, while it can be used, it’s essential to use fresh E10 gas and ensure the engine is compatible, as ethanol can cause corrosion and attract moisture, leading to potential engine issues.

The U.S. Environmental Protection Agency (EPA) has given the green light for E10 to be used in any normal, gas-running vehicle. The introduction of E10 came after the Clean Air Act Amendments in 1990, aiming to reduce carbon monoxide in places where it was dangerously high. This started the ethanol industry’s growth in the U.S., and now, E10 is available in every state. Almost all (98%) of U.S. gasoline has up to 10% ethanol to increase octane, meet air quality standards, or meet the Renewable Fuel Standard. However, E10 isn’t considered an alternative fuel according to the Energy Policy Act of 1992 (EPAct).

E10 Gas For Lawn Mower

Benefits of Using E10 Fuel

Reduced Emissions: E10 fuel can lower greenhouse gas emissions, contributing to environmental protection.

Octane Boost: The ethanol in E10 raises the octane rating, which can improve engine performance.

Economic Growth: The production of ethanol supports agriculture and stimulates economic growth.

Decreased Oil Dependency: E10 fuel reduces dependence on oil, as ethanol is a renewable resource.

Lower Cost: Often, E10 fuel is less expensive than pure gasoline.

Drawbacks of Using E10 Fuel

Compatibility Issues: Older vehicles and small engines may not be compatible with E10, potentially causing damage.

Lower Energy Density: E10 has a lower energy content compared to pure gasoline, which can result in reduced fuel efficiency.

Moisture Attraction: Ethanol attracts moisture, which can lead to water contamination in the fuel system.

Material Corrosion: The ethanol in E10 can be corrosive to rubber and certain metals, leading to component degradation.

Shorter Shelf Life: E10 fuel tends to have a shorter shelf life than pure gasoline, posing storage challenges.

Drawbacks of Using E10 Fuel

Non-ethanol gas for Lawn Mowers

Non-ethanol gas for lawn mowers refers to purely gasoline fuel, without any ethanol content. It is often used in lawn mowers to prevent issues related to ethanol, such as corrosion and moisture absorption.

Pros of Non-Ethanol Gas

Better Fuel Efficiency: Non-ethanol gas offers higher energy content, resulting in better fuel efficiency.

Longer Shelf Life: Without ethanol, the fuel has a longer shelf life, making it suitable for infrequent use.

Less Corrosion: Non-ethanol gas is less corrosive, reducing the risk of damage to the lawn mower’s components.

No Moisture Absorption: This fuel doesn’t attract moisture, reducing the risk of water contamination in the fuel system.

Compatibility: Non-ethanol gas is compatible with all lawn mowers, eliminating the risk of engine damage.

Cons of Non-Ethanol Gas

Higher Emissions: Pure gasoline emits more pollutants, contributing to higher greenhouse gas emissions.

Higher Cost: Non-ethanol gas is typically more expensive than ethanol blends.

Oil Dependency: Using non-ethanol gas increases dependence on oil, as it lacks renewable content.

Availability Issues: Non-ethanol gas can be less readily available compared to ethanol blends.

Lower Octane Rating: Pure gasoline might have a lower octane rating compared to some ethanol blends, potentially affecting performance.

Machines which Use E10 Fuel

  • Cars and Trucks (2001 model year and newer)
  • Motorcycles
  • Lawn Mowers
  • Boats
  • Small Engines (Generators, Chainsaws, Snow Blowers)
  • ATVs (All-Terrain Vehicles)
  • Snowmobiles
  • Tractors
  • Power Washers
  • Garden Equipment (Leaf Blowers, String Trimmers)

Machines which Use E10 Fuel

Different Types of Ethanol Blends


E15 is a blend of 15% ethanol and 85% gasoline, approved for cars from the 2001 model year onwards. It offers reduced greenhouse gas emissions compared to traditional gasoline, providing an eco-friendlier option.


E85 consists of 85% ethanol and 15% gasoline, specifically designed for Flex Fuel Vehicles (FFVs). This blend burns cleaner than regular gasoline, contributing to lower emissions, and is a renewable fuel alternative.

High Octane Fuel

High Octane Fuel has a higher octane rating, offering enhanced performance and efficiency. It is particularly beneficial for high-performance and racing vehicles, as it reduces the risk of engine knocking and contributes to smoother engine operation.

Leave a Comment