Can someone clarify which Amoil oil filter is best for the 2UZ. I could swear the amsoil guide recommends the SDF-57, which I am currently running. I see most of you run the SDF-15. Amsoil tech Support says it has a larger filtration capacity but cannot guarentee proper fit/gasket seal. Does it fit perfectly? Is the SDF-15 a better filter for our trucks?? How much additional oil are you guys adding at a normal change to accomodate for the increased filter capacity. Again, Amsoil tech suggested a need for up to 16oz. of additional oil. Comments please!