Originally Posted by Mp128
how about mobil one 5w30?
It's no BMW extended interval approved.
The proper Mobil 1 is 0W40, but I burned oil with it.
Castol 5W30 seems to be ACEA5 approved too and should work. it's $26.xx at Walmart in a 5Q jug. Mobil 0W40 is about the same, but will drop to $22.xx sometimes in a jug.