I had to cut my initial post short because I was in class on break. To add to this, it was a early 2000's Silverado with the Vortec LS, unsure of the displacement. He pulled a large camper with it everywhere. In fact, the camper was still hooked when the truck came by for initial inspection.
He used Valvoline 10w30 conventional, no additives. He made sure to include it in the front seat for when the engine is back together
Didn't see the filter brand though, maybe that's where the magic is! Haha