Doubtful, given the TBN of a typical Premium conventional motor oil, which is almost half of what Amsoil Series 2000 0W30 is. As an example, Valvoline Premium conventional 10W30 runs at a TBN of 7. Ams Series 2000 0W30 runs at 12+ TBN. Amsoil's 10W30 also has a 12+ TBN. TBN is what gets you thru an extended drain period, as long as your filtration is where it needs to be.
The 10W30 Amsoil has superior cold start capabilities as well, and the 0W30 kicks both their butts in that respect. BTW, the 0W30 was tested at -35, which I'm guessing is the standard for that "0W" multigrade. For me, the 0W30 was a no-brainer, as I live a mile from the interstate, and I don't believe in long warmups.
http://www.valvoline.com/products/All-Climate.pdf
https://www.amsoil.com/storefront/atm.aspx
Now, going to Diesels
Compare Valvoline Premium Blue 15W40 (not "Extreme") versus Amsoil 15W40 HD Diesel/Marine Oil.
https://www.amsoil.com/storefront/ame.aspx
http://www.valvoline.com/products/pbud.pdf
Amsoil TBN 12
VPBLU TBN 10
Blackstone recommends replacing oil at a TBN of 2 unless other factors cause a sooner change.
VPBLUX (Extreme) is a 5W40, and AMS 15W40 is still a better product.
http://www.valvoline.com/products/PBX.pdf