This is the factory fill on a 2007 Mercedes Benz C230 Sport Sedan. Fuel has been about 50/50 Premium Unleaded and E85.
So looking at a virgin analysis, a few things jumped out at me. 1st is the viscosity is low, as in a 30W. I not sure why that is, maybe the Ethanol? Also iron is pretty high, so I am glad I changed it. Copper is also unusual to me. Is that from the oil cooler? TBN is still pretty darn high. Guess this oil may make the 13K that Mercedes recommends for OCI's. Any other thoughts?
Last edited by a moderator: