So, looking at these two oils.... Original Platinum vs Ultra was pretty simple. GIII vs GTL. Now, not so simple..... I know that most will say PPPP is fine as it is readily available, but that is not why we are here, right? We split hairs and are addicts..... What are the major differences between the Pennzoil Platinum Pure Plus and the Ultra Platinum Pure Plus? Is it worth seeking out the Ultra Platinum? My specific applications will be in the 0w20 grade. Thoughts?