These may help you decide, read my articles here:

http://ferrarichat.com/forum/faq.php..._haas_articles
http://theoildrop.server101.com/foru...e=0#Post258506

I am using Red Line 5W-20 in my wife's '04 Murcie. My Enzo gets Castrol Syntec European Formula (German Made) 0W-30. I also ran the same Red Line in the Maybach 57. Oil analysis showed less wear than with the recommended OEM oils.

aehaas

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Smart people learn from their own mistakes.
Very smart people learn from other people's mistakes.