I run 5w50 Redline and still get this noise from time to time. It always goes away. But it is very noticeable after the car has been sitting for a couple of days. It doesn’t happen on first start. It happens on the second start. For example.. car has been sitting for 3 days. It starts normal and I drive it 20 min to the store once I get back in and start it the second time I will hear the noise under 3000rpm. This noise will last 1-5 min. I have also heard it on long trip while just maintaining highway speed.
I don’t have my laptop finished to code to the car yet and I am waiting on cable from bimmer geeks. But in the next couple of weeks I am going to do vanos bleed and see if it helps. This noise is the exact noise you get when bleeding the system. I have had the system bled at the shop and have heard it first hand. It matches the videos I posted.
Very similar to the original post. Following this thread closely.
