For oil, our family uses Valvoline in our engines. We specifically use the High Mileage synthetic blend since we all have higher mileage engines. We always get our oil at Walmart since it’s the cheapest. Auto parts stores charge a ridiculous amount for oil. In our GM vehicles we use ACDelco oil filters. I agree with
@Erik the Awful on Fram filters, try not to get them lol.
I did try out Mobil 1’s Full Synthetic High Mileage 5W-30 in my 98 today and it seems to be working good as I just went from using synthetic blend to full synthetic. Though, since your engine is brand new, you can get away with using the regular stuff.
Mobil 1 and Valvoline seem to be close in quality, haven’t tried other brands, though, I probably wouldn’t trust oil from SuperTech or anything generic, seems to not be as good as the name brand stuff.