EDIT: Forgot to add, I have 51,xxx miles on the car.
Just got my sample back today. I'm a happy camper
2008 E90, 6MT, AFE Intake, TMS test pipes, Megan rear section.
The car has definitely seen some full throttle. I don't abuse it but I have driven it 'spiritedly'. No track days on this oil.
Car was daily driven in the winter cold on this oil (TWS 10W-60, exactly 5,233).
When I changed it, I put in M1 0W-40 and I plan on doing another sample of that in 5,000 miles.