Originally Posted by ImportConvert

Doesn't matter if it's true or not. If you plan on having your car serviced at that dealership if a warranty issue arises, it matters.

Sure, Nissan will probably make it right in the end, but I PROMISE you will have an easier time of it if the service-manager is in your corner going to bat for you instead of hamstringing you.

No, OEM filter is not TECHNICALLY required for warranty, but in YOUR case, it makes things better.

I would just run it. It can't be that expensive and I'm sure it works just fine.