The following was sent to our Executive Director, I have no further information at this time.

Unleaded aviation fuel is being tested in several locations throughout the United States. One of those locations is Watsonville, CA. Member Sam Kennedy who is based at WVI reported that local mechanics have observed damage to sealants, gaskets, O-rings and hoses to aircraft using this fuel.(See photo)

We recommend using caution before putting this fuel in your aircraft until more data are available. Several other organizations, including EAA and the Cirrus owners group have_ issued similar warnings.

More information here, and here.