Originally Posted by zeng
Very good and low wear metal rates for a typical BMW.
OCI could be extended further, IMO.
Thanks, I just wanted to establish a baseline and see how it would do. There has been a lot going on during this OCI. The first month of driving was short trips (5 miles), then a 2600 mile road trip, and now I drive about an hour each way to work. I'm thinking I could go further with the next one since the oil stays at operating temp longer and most of the miles are highway. Also want to compare the Castrol 0w40 (which is what I filled with) with some Liqui-Moly 5w40 I got from someone who sold their Jetta.