Here's a bump.
I am running this oil in my 2006 330i with N52B30. Previously ran Castrol 0W40 until it wasn't sold in Canada anymore, so I went with the M1 0W40. Performance seems to be just fine. With the Castrol I was burning around 1qt every 2k miles, with the M1 perhaps 1qt every 2.5k miles.
However, I am starting to see some codes popping up in the DME. I had a Check engine light set a few weeks back, and am seeing the following codes intermittently:
- 29F4 and 29F5 Cat 1 and 2 below threshold
- 2C7F Lambda probe after catalytic converter 2 trim control (too lean)
- 2a2f mixture regulation 2 - Mixture too rich
Could this be a result of the higher SAPS (Sulfated Ash, Phosphorous, and Sulfur) in the oil? Or is it likely that my O2 Sensors are on their way out? Not sure if either of them has ever been replaced. I may change this oil out and run Motomaster OEPlus 5W30 which is rebranded shell oil, and LL04 approved.
What does the forum think?