Note that a fuel can be approved for an engine but not approved for a particular plane, due to issues with the fuel storage and delivery system. The table in this document shows that my O360 can run on anything this side of Jack Daniels, but mogas is not approved for my Beech (I believe there was a vaporization problem).
EDITED TO ADD:
Just found this - “The airframes we have flight tested which failed the test include the Navion, Musketeer, Piper Apache PA-23-235, 7KCAB, Mooney M-20-C, Piper PA-24 250 Comanche & the Avcon converted 180 hp Cessna 172. Generally speaking, any pump fed airplane not already on the approved list is incapable of passing the flight tests unless substantial modifications are made.”