Quote:
Originally Posted by regular guy
So I think an alternate hypothesis needs to be presented to connect low octane to the failures that excludes detonation. So far, no other hypothesis has been presented. I've got to believe that the brightest and smartest engine guys on the forum could be able to come up with something -- yet there's still a void connecting low octane without detonation to the engine failures. So for me, the connection is still very remote and unlikely.
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Could the engines be actually running a bit cooler with lower octane in such a way that the "heavy" 10W-60 oil is flowing less well, leading to increase bearing wear? That's all I got for now, but I'll keep thinking.
Also, I'm still not entirely convinced that enough sets of non S/C'd M3 bearings in failed engines have been examined to conclude that detonation is rule out. I know the ones that you and kawasaki have looked at didn't show what appears to be signs of detonation, but there are still many failed engines whose bearings were never examined. Since S/C'd engines are showing signs of failure due to detonation, it doesn't seem like it should be that much of a stretch that cars could be failing in lower octane states for the same reason.