Yes it was, I have done 8 track days since and changed the oil 5x and the oil looks good. I have some pics on old rod bearings on my Instagram FastMacM3
No codes, just once and while I would get a coolant smell. Then finally it started doing an occasional drip, then I rented a coolant pressure tester and was able to find it was the turbo actuator coolant seal leaking.
Mine was leaking and giving me turbo codes. I’m installing City diesel actuator from Genos in a couple weeks. Have to slap back together for now with gasket maker haha