Originally Posted By: SR5
Here we can get Castrol Edge 10W30 A5/B5 with a HTHS of 3.2 cP, which is nice.
I would also like to see a full synthetic 10W30 (Group III will do) that is A3/B4.
10w-30 FA-4 and 10w-30 CK-4, respectively, are about the closest we get, and the latter will probably be a blend. I have no idea about the former, yet.
