Nope I said that about this engine because that particular engine tends to run very hot and has a tendency to not live long unfortunately. If that particular engine is running at 210 it will be very rich. And my previous statement did not involve "breaking in" nor did it imply this. Not all engines are the same...
Every engine, every location, and every fuel will change running temp. So telling him hes rich at 220 without hearing the engine run or knowing anything about his running conditions is BS! Just switching from 20% to 30% will drop temps by 20-40 deg.