Good point, but to further elaborate, it was specifically designed for extended oil changes on commercial diesel engines. I assumed
that since it was "fortified" for extended oil changes, it would allow me to do so on my WRX. Analysis proves otherwise. I also didn't take into account that those diesel boys have an oil pan with a greater capacity than our gas tanks either!
They also generally use dual filters with HEPA filtering capabilities or better. To be honest, Delvac was an expensive mistake. I ordered my WRX, and in the 3 week waiting interim, ordered many "accessories" for the new car to satiate my Subaru lust until it came in.