Thanks for the info!
Well, do we know the percentage ratio of base oils for an oil to be called a synthetic blend? Was it 20-30% group III / PAO or less?
Nope. As far as my understanding, it can (legally) be 1%. But for practical purposes in formulation, it would probably need to in excess of 10%. Given it’s been a while since I was in that world. But to meet GF6 with a blend, you needed over 10% G3 to meet the cold crank with a 115VI G2 base oil still.
That being said, there’s all sorts of ways to solve the puzzle. And it depends on what your intentions are. Making a D1G3 Syn blend is probably only practically possible with a large amount of PAOs in a good group 2. Which, at that point… as I mentioned in another thread. Could that not be, practically better than a cheap, straight group 3?