That was an interesting article. Would have been more interesting if it were actually testing wear. I couldn't care less about carbon buildup or patterns - air temperature & squish clearance will do more to change carbon patterns than oil type or ratio will.
I haven't used enough Sabre to judge if the guy is right about the scuffing ... but I suspect he isn't. By his first statement, he has already formed an opinion about running 100:1, as lots of people have - because it's different - out of the norm (I still get people who are afraid to run Signature Series for 25,000 miles in their vehicles). He even admits to the engine having 54 test hours on it with all those different oils at different temperatures ... and in a couple instances running too lean. I call that test inconclusive as far as wear goes, even though this wasn't a wear test to begin with.
I'll be the first to bitch if any of my engines suffer an oil related failure. As of right now, I couldn't afford to even repair one of them, let alone replace any of them.
That's right, I love my clap &