At the end of the day, if GM actually wanted tighter specs, they could work through the API if they wanted to. But they don’t, because it becomes beneficial for them to do it independently. If you feel like it’s important for you, then use it. This thread is particularly about Honda and Toyota. You do not need to run a Dexos approved product in those engines, end of story. But if you, feel like it’s a better product, then do it. Arguing nuances, verbiage, marketing, etc. to me, is splitting hairs and a waste of time. That’s why I don’t like getting involved in PCEO threads. Thus, my opening statement of thanks, I already hate this thread.