I gotta tell'ya guys: I can't stand that Quaker State Defy bottle. I suppose I could get used to it if the oil did something miraculous, but dang that's an ugly bottle. A brick red bottle with a green cap......nauseating.
Probably as a cost saving measure, the Green bottle superseded the red a few years ago. The distinction was to be in the label color.
Quaker seemed to be getting away from the name Defy, although it is still visible on this label as if it were an apparition. The label has been changed since this version, no longer referencing boosted levels of zinc as an anti-wear agent, so I built up a small stash.