The search is on for unleaded fuel for general aviation planes. That’s the message of a new video from the FAA giving us a quick — just 51 seconds — peek at some of the researchers working on the project.
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All of the aircraft certified to use 80/87 octane avgas could use 91 octane mogas, as long as it doesn’t have an ethanol.
My opinion is that there will not be an unleaded 100 octane fuel developed, AND which costs less than 100LL.
In California, all auto fuel must contain 10% minimum , so a ‘pure gas’ 91 octane is not available.
So the STC my aircaft has for mogas is useless in CA., so I continue to ‘pump lead’ into the air.
Just one observation about this rather pointless video. The Beech Musketeer that is shown, in many cases, is certified for 91/96 avgas. This being the case Swift fuel 94UL unleaded fuel would be legally usable in that aircraft as is,if only it were widely available.