Originally Posted By: ThirdeYe
Originally Posted By: kschachn
Plus, once again, no tangible or demonstrable benefit either. Except that it makes some people feel better.
Originally Posted By: sayjac
^^^^You are 100% correct sir. Anytime one uses an oversize non spec filter size, the 'filter' warranty in no longer valid no matter the filter manufacturer. Thus if something happens to the engine that is filter related, the manufacturer has no liability. Generally a minor consideration for many, but one that should be noted in the interest of being fully informed.
I don't think that's necessarily true. Jay from Fram has specifically said on this forum that certain sizes are interchangeable and that they would know this if there were to be an issue with the filter (i.e. the 6607 vs. 7317).
I'm not going to search for the post(s) now, but what motorking actually said is that the first thing the Fram warranty department checks when a claim is filed is for correct/spec application being used. If not, the filter claim is automatically voided/invalidated. This was posted on one of the many oversize filter threads.
In a separate post on the specific topic of using the 7317/14610 instead of the shorty 6607/14612 in one of his personal vehicles, a Nissan Z iirc, he uses the longer 7317 instead of the spec 6607. But he is willing to assume the no filter warranty risk however small of using the longer filter application.
Fwiw personally, when it comes to using the 7317/14610 instead of the 6607/14612 as long as room permits, I'd do it too. Same for SAE cousins 4967/14476 to the longer 4386/14477. Other than being ~.5" longer with more media, specs are the same. Many Nissans spec the shorty but have room for the longer filter. But that's just me.
So they can be used interchangeably but that doesn't change that there would be no manufacturers filter warranty in effect when using the longer non spec application.