As I said, I read various opinions, not just those on this thread. None of the oils I mention is "cheap", those would be Supertech, Proline etc. All of these, as is the consensus of various threads on the topic, suffice at 3500 mile oci and as is also the consensus of various opinions, the difference between a Noack level of 8.8 (QSUD which IS low) and M1 at 10.1 is negligible at this OCI. Those that may not have low NOACK do have low ash (maybe not by your standards), also considered by many to be very important. Dont get fussy, we're all in this together. The 'insanity' comment was made because there are many points being made on all sides that sound valid, including yours. BTW, M1 ESP was meant to be the M1 variant listed. Especially for $26.97 @ Walmart.