Unfortunately, the QS Defy (which had about 1070 ppm of zinc) has been replaced by QS High Mileage (which I've heard has a bit less... around 890 ppm)
I still have 4 quarts in my Trunk (of Defy) so... that'll be it after that.
So, you could take a look at AMSOil's Z-Rod.
Also, I did talk with an engineer at Shell in Texas (you can contact them at [email protected])
They recommended Shell Rotella-T 15w-45
(SOPUS owns "Shell", "Quaker State" and "Pennzoil"... they also make most of Canadian Tire's "Motomaster" branded oils)