Yes, initially a leak from the upper drivers side, around where upper rad hose connects. Can see trace marks dried up on air filter housing and MAF housing. Also, I guess radiator had crack in plastic near the bottom, but thats erroneous since new radiator installed. When he ran the car for me, I could see the coolant not spraying out, but collecting along the rim on what I assume is the expansion tank. Again, would be the area where upper rad. hose connects.


Only reason I brought up so much info is because of 1, the overheating seemed to react to different climate temps, and surrounding temps, which just leads me to think thermostat or similar temp. regulated valve.
Second reason is or the other thermostat/valve located near the bottom of the expansion tank, as explained here: BMW Expansion Tank Diagnosis Part 2 of 2 - YouTube