Like I said with a stat sheet, it just happens to have a low tbn, I'm not sure you yaw'll wish to make this a big deal. Universal averages are well over 1.5 higher, and tbn is an important feature of an oil. You know, that is why it is the first thing on every oil with pqia. Someone wanting to choose an oil and run it for a long time, what would you genuis's think would be better then tbn to look at? I was a truck driver for a decade, all we cared about what tbn, nothing else. Not spec hunting and showing our feelings of oils, simply look at the tbn so acid doesn't eat our trucks engines and have the right visc, and have a smooth ride. Not mentioning the tbn is just handing out BAD info. I wont bother to carry on, maybe the OP will consider what I said, maybe not.