The new Mobil ESP 0w30 carries all the approvals and specifications from the Formula M 5w40, including 229.51, 229.52.
Mobil 1 ESP Formula M 5w40 has been discontinued by Mercedes/Mobil and replaced with Mobil 1 ESP 0w30. This oil carries 229.5/.51 approval. Note: though it is not printed on the back you can confirm the specification by scanning the QR code on the label.
Sold in 1 quart bottles.
This oil meets the following manufacturer specifications:
MB: 229.51, 229.52