Lowest Viscosity 0w-30 / 5w-30

[92saturnsl2]

What is considered to be the lowest viscosity of the 30 weight variety oils?

I assumed Mobil 1 0w-30, but after looking at the datasheets, it clearly is not.

For example, Amsoil 0w30 datasheet reads:

Kinematic Viscosity @ 100°C, cSt (ASTM D445) = 10.3

Which motor oil is lowest?

 

[JAG]

Mobil 1 0w30 has a LOW HTHS viscosity...ignore the virgin kinematic viscosity since engines don't "know" what that is (they don't pour oils down tubes or inclined plates).

You could of course mix Mobil 1 0W-20 and Mobil 1 0W-30.

 

[scoobie]

Mixture MC semi 5w20 with any synthetic 5w30, mixed 1:2.
i actually use a 1:1 mix in my NA 2.5 flat four, in winter.