Well, I finally pulled the trigger and updated from my 40 year old Chevy C10. I bought a 2018 Silverado LT 5.3L with 39,000. Truck is clean as a whistle. Are there anything items I should keep an eye out for as I put some miles on this truck? One thing that baffles me is the oil requirement, 0w-20? I know our work trucks, 2012 Sierras with the 4.8 liter V8s say to use 0w-30 Dextos. But why such a light weight oil in my newer truck? Guess I'm to used of using 15w-40 oils in my old truck 5.7L. Any enlightenments are welcome. Oil recommendations as well.