What is 0 wt oil?

[Ed Fenwick]

Aloha folks, what it 0 wt. oil, I understand that when cold it is thin but it is a fhisiwaqual imposibobality for fluid to have no viscosity! So, what is 0?
thanks God bless Ed

 

[Rod Mann Deux]

it stems from ILSAC engine oil performance standard aimed at improving fuel economy
https://360.lubrizol.com/Specifications/ILSAC/ILSAC-GF-6/ILSAC-GF-6A-and-GF-6B
The 0 is a factor of the oil’s viscosity HTHS performance as noted on previous posted page, not the viscosity itself..
https://www.stikkitnow.com/0w30-vs-5w30-motor-oil
I'm more concerned with electronically controlled oil pumps
https://www.underhoodservice.com/variable-displacement-future-oil-pump
than again 08 sport trac will be the last computer controlled vehicle I'll ever own.

 

[Ed Fenwick]

Thanks Rod, I did not realize that it wasn't the viscosity index. That is where my confusion was from.
God bless Ed