MOGas for cruise on IO550
A P28-235 (O) has a MOGAS STC, I know that A Beech Debonair IO470 has one...Rotax engines run better on MOGas (they stay much cleaner!). I ran one (Rotax)in Africa until 2000 (TBO) sometimes on 100LL but mostly on (African) MoGAs (which is of very varying Oct and Quality). Running on 100LL showed fouling and heat signs(small molten metal spheres on PLug cathodes).
Running on Af moGas showe dark to black caulifowe-like growth but the engine made 2000tbo time and was still a good runner.
I am tempted to buy a Beech A36 with IO550 (non turbo) and would like to know if I can risc to run it (55-60% cruise) on such MoGas if 100LL isnt availiable (which happens frequently>