So, I'm doing a deal today on a 2017 silverado 5.3L with a Whipple 2.9L supercharger. I've seen where the truck factory calls for 0w20. I'm a little hesitant about using that with something that has 150hp as well as 150 torque more than factory. I'm an amsoil dealer so I can get that but I'm a off the shelf at Walmart type person honestly and I would be changing the oil more frequently than what would be beneficial using amsoil. What off the shelf oils, viscosity and brand would be a safe bet? Also ill more than likely add lubegard biotech to whatever it is, I've heard differences in motor noise and over all vibrations with it. I wont be tracking the truck, it will be my daily driver, not saying that I won't take the opportunity every once in a while and make someone feel less of thier vehicle