FAA To Approve Use Of 91UL Fuel In Two-Thirds Of Piston Fleet

[Pinecone]

This will be the biggest barrier to widespread adoption. Most small airports don't have two fuel farms for avgas anymore. In the old days, you could get 80 or 100 octane avgas at many airfields, but when 100LL became available, most airports dumped the lower octane fuels like a hot rock. G100UL or its equivalent is the only widely practical solution to removing lead from aviation fuel. An airport that only sells 91UL will be in world of hurt with many of their based aircraft owners, and the potential for misfueling will be greatly increased.

A lot dumped it because it was not available.

Back in the early 80s I was instructing at the local airport. We had 100 and 80 tanks, but could not get 80 at all. So started using it for MOGAS for a few planes with the STC.