Alot of threads on here about CenPeCo oil. Lots of people believe it's a great oil, and right in line, or just behind, Schaeffers. I've never run it personally, but have seen a few UOAs and it seems like good stuff. Just not enough moly for me for personal reasons. Apparently they've been around over 100 years. You don't stay in business that long without making a quality product.