How does multi weight non detergent motor oil work?

[Hail_Ants]

@Mr.Slant

Even if you DO drive in very cold climates, there are some 0W30 products available that were basically conventional oils.

I remember the first time I saw an oil listed as “0W-something”. I was kind of like, “Huh?! We’ve achieved completely *frictionless *oil?!?”