1 The octane measurement is an attempt to quantify a fuels propensity for
detonation or pre combustion. Higher octane means less propensity.
2 Precombustion and detonation are usually caused by, among other things,
engine overheating, and hot spots.
3 Precombustion and detonation can lead to further increases in CHT.
4 Precombustion and detonation can damage an engine.
5 High CHTs can damage an engine.

Let me know which of the above statements you disagree with, and I will find
a reference for it.
I stand by my statement that an overheated engine will be more damaged if it
is running lower octane fuel.

"Jay Honeck" wrote in message
oups.com...
I also agree with posters that claim that mogas can lead to early engine
wear. The fuels may be equivalent under normal circumstances, but if the
engine overheats, the low octane fuel will do a lot more damage than the
high octane fuel.

That is simply not true. Perpetuating a myth like that in this forum
is not productive.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"