Just an FYI, Mobil Delvac 1 ESP 5w40 is not a very good choice for the wet belt in the baby duramax. Have seen a couple of VW EA288 TDI’s with deteriorated wet belts using the delvac. Cannot say the same for the 288’s using Mobil 1 ESP 0w30. The oil pump is driven by a wet toothed belt. Cams...