I have a question regarding 90 octane vs 91 octane. I have the 160HP STC on my Cheetah and the STC states it can burn mogas as long as it’s 91+. However, I have read on many forums that the engine will run perfectly fine with 90 octane and will not harm any internal components or damage rings, seals, etc.. And, burning mogas is better for the longevity of the engine. Can anyone confirm this?

Thanks,

Erik