So much mis-information… Swift’s current fuel is 94UL, an unleaded 84 octane aviation piston engine fuel approved for roughly 68% of the engines/aircraft in the GA fleet. We have been using it in the SF Bay Area in Calif since Oct of 2021 and it is great for any aircraft that is approved. Swift’s 100R will be arriving in 2025, and will require an STC as UL94 did. The FAA could choose to issue a blanket AML but probably won’t prior to the EAGLE deadline in 2031. UL94 STC’s are valid for 100R, or new ones can be purchased for planes not eligible for UL94 or that were never registered. And dissolving the adhesive on a fuel bladder patch may be meaningless to some, but I would have some concerns…