What's that grey swirl in the motor oil?

Question by mohammadsaud posted 2 weeks 1 day ago in 2005-2011 (E90, E91, E92, E93)

Grey swirl in oil

I have a 2009 BMW 328 with 72k miles.  I started the car for 5 min let it run didn’t notice any knocking noises or anything. Rubbed the oil around my finger didn’t feel any metal contact. What can that be