Talk about a subject you can 1000+ opinions on, this is it. Food for thought, how about the new M.B. AMG powered cars. Guess what oil they come with?? Mobil 1.
I race my Mercedes at least once a month, I use 5W40 synthetic oil. Wide open throttle for 50-60 minutes at 7000+rpm.

------------------
MERCEDES BENZ MASTER GUILD TECHNICIAN
ASE MASTER TECHNICIAN
27 YEARS M.B. TECH