What Type of Gasoline Should I Use in My Generator?

We recommend using clean, fresh, unleaded gasoline with an octane rating of 87 or higher in DuroMax generators.

The gasoline used should contain no more than 10% ethanol (E10 or lower).

Using fresh fuel helps ensure proper engine performance, easier starting, and reduced fuel system issues.

Ethanol Content Recommendation

Gasoline containing 10% ethanol or less is acceptable for use in DuroMax generators.

However, ethanol-free gasoline is recommended whenever possible, as it helps:

• Reduce fuel system deposits

• Improve long-term engine reliability

• Prevent carburetor clogging during storage

Fuel Quality Tips

For best performance:

• Use fresh gasoline that has not been stored for long periods

• Avoid gasoline with more than 10% ethanol (such as E15 or E85)

• Consider using a fuel stabilizer if the generator will be stored for extended periods

Common Questions

Can I use ethanol-free gasoline?

Yes. Ethanol-free gasoline is often the best option because it helps prevent fuel system issues and improves long-term storage stability.

Can I use E15 or E85 fuel?

No. Fuels containing more than 10% ethanol are not recommended and may damage the generator’s fuel system.

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