Why Castrol Edge 0w20 is not labeled GF-6A?

[penz08]

Hey guys,

I noticed Castrol Edge black and gold bottle don't have the GF-6A specification, but GF-6 only, unless they updated it, I didn't see it.

I saw online that the GF-6A would be better for GDI engines. I noticed Mobil 1 and Valvoline have the GF-6A spec listed, but not Castrol, anyway not here in Canada.

How better GF-6A is really? Better anti-wear properties?

 

[Bkdc]

0w-20 is GF-6A. Don’t worry if it doesn’t say A. GF-6B only applies to 0w-16