I go in-depth looking at popular oil filter's used on Ford Modular engines. In my case, a Ford 4.6 in a 2009 Ford Crown Victoria Police Interceptor. I compare and contrast the Motorcraft FL-820s, Fram Ultra XG2, Wix/Napa Gold 51372/1372, Wix XP 51372XP/Napa Platinum 41372, and Mobil 1 M1-210A. I also bring up the Royal Purple 20-820. Enjoy!