OK, here's what my owner's manual(OM) says in my 2015 Altima:
You can use conventional oil in 5W30 or 10W30.
Or(recommended...not required) synthetic oil 0W20 Nissan Ester Oil.
I've used conventional 5W20 & 5W30.
As well as, synthetic 5W20 & 0W20.
All oils are from either Walmart or cheap discontinued oils from parts stores.
Don't over think this as the owner's manual can be confusing. My OM also states to use Nissan Ester Synthetic Oil. But from learning here on Bob's, Nissan's Ester oil isn't Group V ESTER, they just call it Ester Oil.
I don't think that I've paid more than about $25 for synthetic oil & filter. PP or M1 & a Fram Ultra might cost you $32-$35 or M1 oil & M1 filter could get you over $40. But you don't need to spend more.
Last edited by Char Baby; 01/31/20 03:45 AM.