Forgive my tongue in cheek title...... In looking over the product data sheets on the HPL consumer site for their Euro 0W-30 and their Euro No VII 5W-30 (no 0w-30 available in No VII) it seems that their HTHS is very similar (3.520 for Euro and 3.566 for Euro No VII) and TBN is only slightly different with the edge going to Euro No VII. Assuming one does not live in a super frigid climate and is doing normal-ish drain intervals, is the difference in these 2 top tier oils a slightly different additive package and possibly No VII having slightly purer base composition? How would one go about acessing if they "need" (a very relative word regarding boutique oils) one of the other?
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