Pennzoil Euro L 5w30 doesn't have MB 229.52, but Pennzoil Euro LX 0W30 does.The MB 229.52 standard is probably the most stringent euro standard in terms of oxidation. M1 ESP 5w30 has this cert. The Pennzoil Euro L doesn't. Not sure about the others.
Bill7, Would you consider using a 0W-30?