This can't be significantly cheaper than Valvoline Maxlife, it is a very well-known and well-proven fluid. Any reason why you're pursuing what's nearly an unknown?
Have used an ATP exhaust manifold in the past on a GMC Envoy 4.2... it worked fine. No experience with any of their other products. Unless it's much, much cheaper why not use Valvoline Maxlife, like the other person suggested?