The nissan maitenence recomends replacing the in-cabin filter every 15,000 miles. Is this necessary, and is it easy to do?

 

It is maintenance that will help you breathe easier, but that is about it. The filter is for the air intake on the a/c blower motor. My '98 SE does not have one, so I made one. I am not sure where it would be on your car.

 

I have a 98 SE also, and I have allergies, plus the DC pollution, so some clean air would be good.

 

I posted a thread a month or two ago about this and how to add one. I do not believe that you have one stock. The filter only filters in-cabin, recirculated air. If you can't find the post with the search feature, let me know.

 

nothing came up on the search.