Spitto that is UTTER BULLSHIT.
If you're correct then an Aero engine such as a Lycoming O-360 running 130/100 (130 octane rich burn, 100 lean burn) should do nothing but ping because it only runs 8.5:1 compression.
I ask you to please refrain from posting any more bullshit. There are numerous posts made by you in the trashcan because of the poor quality of information. We strive for a high quality of information on rollaclub unlike some other forums.