That's due to the fact that the US lagged much of Europe in implementing low-sulfur gasoline. It no longer applies to this market. The only meaningful difference between Longlife-01 and Longlife-04 is the SAPS level. Both have the same minimum HT/HS.doing a search on "Longlife-01 or Longlife-04" I found this.
https://bobistheoilguy.com/forums/t...gives-better-protection-than-ll04-oil.329930/
So I have no clue what to believe.
If you had done further reading you would have found this as well.