I have researched oil for the last year on this forum, in other forums, in discussions with autoXers, generic internet search, etc.  I never came across ACEA commentary however.  Hmmmm.  I'm an expert on many things, but not all things, which is why I appreciate forums like this so that I can find others who are.  
Thought I would share this below because I think its funny.  Access to web sites are blocked from my work computer.
Blocked Page information
URL - 
http://www.petrenko.biz/go.php sid=7&said=liquidweb&q=porsche+approved+oil&sref=http%3A//www.google.com/search%3Fhl%3Den%26q%3Dporsche+approved+oil%26aq%3  D0%26oq%3DPorsche+approved+oi&url=http%3A//porsche-tsb-approved-oil.poultrys.us
Block Category - 
Extreme;Pornography  
go figure   