I'm using Magnatec in all of my cars at the moment (all 16 V 4AGE of some variant).
I'll probably use it in my FXGT when I do the Blacktop engine swap into it.
I found my black top liked a slightly thicker oil. Ran 15W50 or 15W40 with a bit of Moreys. Wasn't a fan of the thinner stuff especially semi synthetics. To much topping up required.