How many oil changes have you done with m1? Do you have enough data to establish real trending to compare consumption with oil a to consumption with oil b? That is my main point. Yes some engines empirically respond a bit different to formulations. But to base a change on what others just say is no where near as effective as real data from you
I only run 5/30 while under warranty. Non us z car manuals allow for 40w and such. If I still have her outside of the extended power train warranty I will use m1 0/40 and see how uoa look. Mostly because its a single oil to keep in the garage and the penn. ultra I u we now is not a high volume product.
- b