Yes sir, that QSUD is good oil! I used it in my old GMC 2500 with amazing results. I just did my first oil change and went with my all time favorite Amsoil; I used it religiously when I was canyon racing. 6200 RPM’s over and over hour after hour month after month and my UOA’s from blackstone were Perfect.
I’ll post my UOA on my next change also.
On a side note, it’s important to get that factory oil out at 2-3k miles, I had silver glitter in the bottom of my oil filter housing last night when I dumped the factory fill. The filter itself had some too! That’s one thing I like about the oil filter, easy to inspect.