I kind of like it, but it does make me wonder. At one time, high mileage oils, along with seal swellers or conditioners, had higher ZDDP and weren't ILSAC rated - after all, a "high mileage" engine is likely out of warranty, and an older engine might benefit from higher ZDDP. Now, that seems to have gone by the wayside.
So, Quaker State Defy comes along, seemingly targeted to higher mileage vehicles that need more ZDDP. Is this going to be another PP/PU situation? I have an application that could benefit from Defy. However, at least two things need to happen. First, it actually has to be available. Secondly, it had better be cheaper than semi-synthetic high mileage oils.
If neither are the case, once again we have an answer to a question no one asked.