A number of posters have stated that the above M1 oils are not designed for a 10K mile OCI (even with a M1 or Fram Ultra 15K mile oil filter) ? ... Anyone care to elaborate as to why the M1 0W20 / 0W30 oils will not hold up to a 10K mile OCI ?
Those posters apparently do not know the qualities of this oil.
2007 Ford Fusion 147,000 miles
2007 Ford Focus 131,000 miles
10,000 mile OCIs on both engines
M1 10-30 in all OPE