• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
General Aviation NewsGeneral Aviation News

General Aviation News

Because flying is cool

  • Pictures of the Day
    • Submit Picture of the Day
  • Stories
    • News
    • Features
    • Opinion
    • Products
    • NTSB Accidents
    • ASRS Reports
  • Comments
  • Classifieds
    • Place Classified Ad
  • Events
  • Print Archives
  • Subscribe
  • Show Search
Hide Search

Is G100UL the answer to our avgas problem?

By Janice Wood · February 16, 2010 ·

George Braly and Tim Roehl may have solved a problem that’s been plaguing the aircraft industry and the Environmental Protection Agency for years. Braly and Roehl, owners of General Aviation Modifications, Inc. at Ada Municipal Airport, say they have formulated an unleaded piston-engine-aircraft fuel that may revolutionize the industry because it produces the same octane rating as leaded fuel, according to a story in the Ada (Okla.) Evening News.

Roehl is quoted in the story as saying the company has filed for a patent for the new fuel, which is called G100UL, as well as applied for certification with the FAA.

Read the full story here.

About Janice Wood

Janice Wood is editor of General Aviation News.

Share this story

  • Share on Twitter Share on Twitter
  • Share on Facebook Share on Facebook
  • Share on LinkedIn Share on LinkedIn
  • Share on Reddit Share on Reddit
  • Share via Email Share via Email

Become a better informed pilot.

Join 110,000 readers each month and get the latest news and entertainment from the world of general aviation direct to your inbox, daily.

This field is for validation purposes and should be left unchanged.

Curious to know what fellow pilots think on random stories on the General Aviation News website? Click on our Recent Comments page to find out. Read our Comment Policy here.

Primary Sidebar

Read the Latest Issue

Cover of the September 3, 2026 edition of General Aviation News
September 3, 2026

Featured Video

https://youtu.be/_5GlVdS1gpo?si=PEX8RGgp1XCz3-uM

Become A Better Informed Pilot.

Join 110,000 readers each month and get the latest news and entertainment from the world of general aviation direct to your inbox, daily.

This field is for validation purposes and should be left unchanged.

Recent Comments

  • Adam McGinty on 70 Airports For His 70th Birthday
  • Alex Nelon on Monday Morning Quarterbacks, Second Guessers, and Downright Lies
  • Jeff King on What If We Looked At 100LL Differently?
  • Jerry Kemp on Botched Go-Around Leads To Crash
  • Jerry Kemp on Botched Go-Around Leads To Crash
  • Jerry Kemp on Respect the Push-to-Talk Button
  • Jerry Kemp on Respect the Push-to-Talk Button
  • Jerry Kemp on Respect the Push-to-Talk Button
  • Miami Mike on The Welcoming Front Door to Aviation
  • DA on Slat Retraction Leads to SuperStol Crash

© 2026 Flyer Media, Inc. All rights reserved. Privacy Policy.

  • About
  • Advertise
  • Comment Policy
  • Submit Press Release
  • Contact Us
  • Privacy Policy
  • Writer’s Guidelines
  • Photographer’s Guidelines