bumper to bumper is usually 3 years 36k, powertrain was 5yr 100k.
While my car is under warranty and I do my own oil changes, I keep records in a book, with receipts (showing Wix filters and Mobil 1 and dates). It's just for my own peace of mind, but I'm meticulous with that stuff.
This is the book I have in each car:
https://www.amazon.com/GLANCE-Mileag...C6QW9VYB9GEQ7W
Although I've never had to warranty an engine on my cars.