Almost forgot.. yes on policing the liquid.. that was in the TAI rules from 2 years ago. Whereby they wanted the methanol from a sealed container. I could care less who's/whats/where's/etc liquid is in the tank. Someone wants to run 50/50 and Mr. Clean.. let em.. ultimately it will be the "Show Me" what works
TSM would never allow it becuase of policing of what liquid and where it came from. I'm supprised they allow any fuel in the tanks..