Thanks Doug, i will PM you.
Oliver, not trying to mess around. The M1 0W-40 from what I understand, shears out of grade. My 95 M3 liked the 5W-40 better, even though the dealer spec was Castrol BMW 5W-30 - burned oil on this, and even the Ow-40.
The 5W-40 didn't burn at all, and had the best UOA of the three. That being said, this is a different application, so M1 may be just fine.