Hello and good day. I was wondering if Castrol has any suggestions on engine oil for a freshly rebuilt 6.2 Caddy ? Also any specific break in recommendations for this engine that you would consider important. This engine had a damaged camshaft and bearings but no cylinder wear or crankshaft damage. Found damaged o rings in lifter valley plate which may have caused low oil flow to top end. Machine shop performed thorough cleaning and new cam, bearings and lifters, also new oil pump , screen, Clevite bearings and Hasting rings. This engine does not have AFM but does have the variable cam actuator. Installed new actuator bolt as recommended. Thanks for your time and consideration. Louis N

Louis Newburn
Owner/Technician
Livingston Automotive
Livingston, California, USA