First of all I just wanted to say how much some of us appreciate you taking the time to post so much valuable data :rockon:
Where did you get this information just out of curiosity? I started this thread http://www.svtperformance.com/forums/terminator-talk-229/384704-mobil-1-debate-synthetic-not.html years back and at that time M1 base stock formulations seemed to be a closely guarded secret.The only formulations that are 100% true synthetic from Mobil 1. Mobil 1 0W-30, 0W-40, 5W-40, 5W-50, 15W-50 Mobil 1 EP 5W-20, 5W-30, 10W-30