Maybe not “the best Delvac ” for all applications. I have ~38 US gal of Delvac 1 SHC 5W40 in my basement (sump of U500 = 7.4gal, burns 1L/2500 miles since new, it’s a ways to Mongolia and back).
VOA shows Mg 27, Ca 4800, P 1280, Zn 1489, B 279, vis100 14.2, TBN 15.2.
Obviously not equipped with...