I have a 2015 Silverado with the 5.3 V8. Under normal acceleration the engine will lug between 40-45 mph. I’ve used Valvoline synthetic, Pennzoil Platinum, Mobil 1, Amsoil XL and Amsoil OE. I did Blackstone oil analysis on Valvoline and XL. The wear metals were close with the Amsoil being slightly better. However, I have noticed that with both Amsoil products the engine rarely lugs and when it does, it’s very light and hardly noticeable. It’s very noticeable with the other products.