Just bought a 2021 Chevy Silverado with the 5.3 in it. Looking towards oil changes and am leaning towards the Mobil 1 Advanced Fuel Economy 0w-20. Usually change every 5k miles. Usually don't use the AC Delco filters but may start. I think it calls for the PF 63E. Don't know what the E means but readily available at Wally. The oil even comes in the 12 quart box for the same price as the 2-5 quart jugs. Anything I should do different or stay with my plan. Can change oil type or filter type for that matter. Just would like to know which is the "best" way. Thanks.