I own a PA18-150 and have just now installed a new factory overhauled
engine. I will get a certificate which allows me to operate the
aircraft on Auto gas. I intend to use 95 Octan rated Super as we use
it in Katanas (AVGAS is extremly pricy here in Austria). For the
break in period I will stay on AVGAS only as the lead content is
needed for lubrication. After break in I use a tank of AVGAS every 25
hours or so to have some lead in the engine.
I am limited to 10.000 ft due to the vapor problem. So that's what I
know. Is anybody out there who can give me some additional
information or has used Auto gas in his engine.