Have you heard of the Magnuson-Moss Act? They would have to prove that the oil filter caused whatever hypothetical issues i would have, and prove that because of the oil filter, is why i am needing repairs. A fram ultra is not going to cause a problem with warranty. I have used my warranty for a million different issues on many different cars, including ring replacement on a 2010 silverado i had because of coked rings from an oiling issue, FRAM ultra on the truck, always did my own changes, didnt keep receipts for anything, they still replaced my rings and didnt say anything about my oil filter. Fram ultra is a better filter than a honda oem, and i will be using it, and it will NOT NOT NOT be a warranty issue unless the filter itself causes a problem. And even then i highly doubt it would cause a problem with warranty due to it having a built in bypass like other filters.