Originally Posted by ChrisD46
Much is written about the M1 oE20 EP - I'm curious about M1 5W30 EP content / quality : It appears to be a lower PAO % base probably with a lot of additives . VII's , etc. to make the extended miles performance usage for longer drain OCI's ?
Perhaps a good oil choice for a longer drain PFI engine but nothing special for a GDI engine owner running shorter OCI's ?
This is not a new oil, or a novelty. M1-EP, in every grade, is respected and well-known here to be a quality oil (well, there may be a few vocal M1 haters who might attempt to malign it, but they can't offer any empirical evidence against it).
I believe Noack rating of the 0W-20 grade is 10% or so (I think I've read that here). That's a strong indicator of a great 0W-20 oil. Some heavier grades have better Noack ratings, but that's a natural function of a thicker base oil.
I don't think you'll find many on here who would say that this is not one of the best "Walmart oils" out there.