Castrol EDGE Euro Car 5W-40 A3/B4 API SP

[Snagglefoot]

Currently running the up-to-date SP A3/B4 5w40 in my 6.0 Chevy.

 

[Snagglefoot]

Absolutely! But, European vehicles call for approval, not grade, except in very few instances.
0W40 is around 50% PAO. I used it on track, 5k OCI, excellent results. 0W30 is basically just bit thinner version with lower Noack.

Just curious. How does one get the PAO data on the motor oil?

 

[edyvw]

Just curious. How does one get the PAO data on the motor oil?

Castrol posts range in MSDS. Not all blenders post that, but pour point is good indicator (mostly). castrol 0W30/40 currently is -45 but MADS indicates up to 50% PAO. Probably lower than that based on pour point.
But if pour point is below -50, definitely healthy dosage of PAO.