"High quality oil" does not = ideal oil for the M96.
The M96 has some very specific and rather unusual tribology requirements.Very few of the mass marketed oils qualify.
There is lots written ab0ut the specific additive package required.More is not necessarily better.
Frequently Asked Questions about Motor Oils / LN Engineering - Knowledge Base LN Engineering
http://986forum.com/forums/performance-technical-chat/56373-yet-another-oil-thread-*caution*-science-content.html