JE's are in nikasils yes, I also measured RA surface can't remember the result but it was within mahle spec.
I think i've read all of the internet about engine break in, but i'm at 500miles now and burning 0,5-1 quart of oil on 100miles!
Is the 20w-50 maybe to thick , it's almost freezing temperature here, if that has any affect.
So I guess the rings should have been seated at 500miles? or continue driving and hope for the best? (i'm not babying anymore)