What Type of Gas Do Lawn Mowers Use?

Choosing the right fuel for your lawn mower is crucial for optimal performance and engine longevity. This comprehensive guide will help you understand the different fuel types and their compatibility with various lawn mower models. By the end of this article, you will have the knowledge needed to make an informed decision about the best fuel for your lawn mower.

Types of Lawn Mowers and Their Fuel Requirements

There are several types of lawn mowers, each with its own specific fuel requirements:

A. Gas-powered Lawn Mowers

  1. Push mowers: These walk-behind mowers are powered by small gasoline engines and are suitable for small to medium-sized lawns.
  2. Riding mowers: These mowers have a seat for the operator and are powered by larger gasoline engines. They are ideal for larger lawns or properties.
  3. Zero-turn mowers: These mowers are designed for maximum maneuverability and are powered by gasoline engines. They are suitable for large lawns with many obstacles.

B. Electric Lawn Mowers

  1. Corded mowers: These mowers are powered by electricity and require an extension cord connected to an electrical outlet.
  2. Cordless (battery-powered) mowers: These mowers are powered by rechargeable batteries and offer more mobility than corded mowers.

C. Reel Mowers (manual)

These mowers are manually pushed and require no fuel or electricity. The cutting action is achieved through a set of rotating blades that “snip” the grass as you push the mower.

D. Fuel Requirements for Each Type

  • Gas-powered mowers: gasoline (specific type varies depending on the model)
  • Electric mowers: electricity (corded) or rechargeable batteries (cordless)
  • Reel mowers: none (manually powered)

Understanding Fuel Types and Their Compatibility with Lawn Mowers

The following fuel types are commonly available at gas stations:

A. Regular Gas (87 Octane)

  • Suitability for lawn mowers: Most gas-powered lawn mowers can use regular gasoline with an 87-octane rating.
  • Pros: Lower cost, widely available
  • Cons: May not provide optimal performance for high-performance engines

B. Mid-grade Gas (89 Octane)

  • Suitability for lawn mowers: Some lawn mower engines may benefit from mid-grade gasoline, especially if they have higher compression ratios.
  • Pros: Improved performance for some engines, reduced engine knocking
  • Cons: Higher cost compared to regular gasoline

C. Premium Gas (91+ Octane)

  • Suitability for lawn mowers: Most lawn mower engines do not require premium gasoline, but some high-performance models may benefit from using it.
  • Pros: Highest performance for high-performance engines, reduced engine knocking
  • Cons: Highest cost, not necessary for most lawn mower engines

D. Ethanol-blended Fuels (E10, E15, E85)

  • Suitability for lawn mowers: Many lawn mower engines can tolerate up to 10% ethanol (E10) in gasoline, but higher concentrations can cause damage or performance issues. Always check your owner’s manual for specific recommendations.
  • Pros: Ethanol is a renewable fuel source, may reduce emissions
  • Cons: May cause damage to some engines, less energy-dense than pure gasoline, may absorb water from the atmosphere

Manufacturer Recommendations for Lawn Mower Fuel

A. Importance of Following Manufacturer Guidelines

Using the correct fuel type for your lawn mower is essential to maintaining optimal performance and engine longevity. Always follow the manufacturer’s recommendations for fuel type and octane rating.

B. Common Recommendations

  • Use gasoline with an octane rating of 87 or higher for most lawn mowers
  • Avoid using gasoline with more than 10% ethanol (E10) unless specifically recommended by the manufacturer
  • Regularly check the owner’s manual for fuel-related updates or warnings

C. How to Find Specific Recommendations for Your Lawn Mower Model

  • Consult your lawn mower’s owner’s manual for fuel recommendations
  • Search online for your lawn mower’s make and model, along with “fuel recommendations”
  • Contact the manufacturer’s customer support for assistance

The Effects of Using the Wrong Fuel Type

Using the wrong fuel type in your lawn mower can lead to short-term and long-term consequences:

A. Short-term Effects

  1. Performance issues: The wrong fuel type can cause your lawn mower to run poorly or lose power.
  2. Starting difficulties: Some fuel types may make it more challenging to start your lawn mower, particularly in colder temperatures.

B. Long-term Effects

  1. Engine damage: Using the wrong fuel type, particularly gasoline with high ethanol content, can cause corrosion or damage to internal engine components.
  2. Increased maintenance costs: Frequent use of the wrong fuel type can lead to more frequent repairs and higher maintenance costs.

Proper Fuel Storage and Handling

Storing and handling gasoline properly is essential for the safe and efficient operation of your lawn mower:

A. Best Practices for Storing Gasoline

  • Store gasoline in a tightly sealed, approved fuel container
  • Keep the container in a cool, dry place away from direct sunlight
  • Avoid storing gasoline near open flames or heat sources
  • Regularly check fuel containers for leaks or damage

B. Fuel Stabilizers and Their Benefits

  • Fuel stabilizers can help prevent gasoline from degrading over time
  • Using a fuel stabilizer can extend the life of stored gasoline by up to 12 months
  • Stabilized fuel can help maintain engine performance and reduce the risk of starting problems

C. Safe Handling and Disposal of Gasoline

  • Always handle gasoline in a well-ventilated area, away from open flames or sparks
  • Use a funnel when pouring gasoline to avoid spills
  • Dispose of old or contaminated gasoline at a local hazardous waste disposal facility

Alternative Fuel Options for Lawn Mowers

Some lawn mowers are designed to run on alternative fuel sources:

A. Propane-powered Lawn Mowers

  • Propane-powered mowers offer lower emissions and reduced fuel costs compared to gasoline mowers
  • Propane can be stored for extended periods without degradation
  • Propane mowers may require additional maintenance, such as regular propane tank inspections

B. Solar-powered Lawn Mowers

  • Solar-powered mowers use solar panels to charge batteries that power the mower
  • These mowers produce zero emissions and require no fuel
  • Solar mowers may have limited runtimes and may not be suitable for large lawns

C. Biofuel-powered Lawn Mowers

  • Some lawn mowers can run on biofuels, such as biodiesel or straight vegetable oil
  • Biofuels are renewable and may produce fewer emissions than gasoline
  • Not all lawn mower engines are compatible with biofuels, and using them may void the warranty


Understanding the fuel requirements of your lawn mower is crucial for optimal performance and engine longevity. Most gas-powered lawn mowers can use regular gasoline, but always consult your owner’s manual for specific recommendations. Proper fuel storage and handling can help prevent starting problems and ensure your mower runs smoothly.

By exploring alternative fuel options, such as propane or solar power, you can reduce your mower’s environmental impact while still maintaining a beautiful lawn. Remember that using the right fuel and following manufacturer guidelines will help


  • Nathan Collins

    Having spent years working in the landscaping industry, Nathan Collins has cultivated a wealth of knowledge about the natural world. He is committed to helping others appreciate the beauty in their backyards, whether it's through identifying rare rocks and minerals or crafting the perfect landscape.

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