2013 PQIA lis of oils
Based on the last PQIA VOA's, Mobil 5K conventional is a sodium oil, essentially VWB with a tad more calcium and more viscosity. Seems like an odd choice to be in Mobil's camp. I never quite understood it. Maybe other consumers don't understand it either. I ran it for one OCI a few years ago...until I figured out it was a Na oil.