I've been using ESP 0w or 5w30 in a '15 Sprinter 2.1L I maintain, never less than 15K mi. OCI but sometimes more like 20K. I've been servicing it since something like 80K miles, now at 180K and I've never pulled a UOA but that engine is happy as a clam and has needed less work than I expected for how the owners use/maintain it.