Unless you have a corn plant full of pollen in the back seat, I'd say it only circulated outside air.

 

At the 3 year mark, I changed mine for the first time. It was definitely in need of changing (was very dirty). I'll do mine about every 1.5 to 2 years now. I'm in Minnesota and never drive on gravel roads. Just open hood, look on passenger side behind battery. You'll need to pop-out several plastic fasteners that secure the plastic vent cover there. Underneath is filter. Takes about ten minutes.

 

I make it a point to change mine once a year, surprisingly dirty.

No, it does not filter on recirc.

 

check again its under your windshield wiper cowel.... Nice try though.

 

Finally an answer that isn't smart ***. Thank you!!!!

 

Hmm... no corn plant, genius, but what if someone smokes in the car?

 

Reminds me of when I used to go the dealer, I told them to change it. The service mgr said "oh Sir, the Mustangs don't come with a cabin air fillter, so I guess we can't change it then, right? ha ha ha". I didn't want to argue, so I said "Oh ok then..." I've never been back there since !

Easy to change, and I bought a Bosch brand filter at AutoZone. Probably cheaper than getting one from Ford anyway.

 

What is it about Mustangs and people with smart *** answers?

 

I think its just the internet in general. I make my smart *** comments now and then, especially if I have been drinking

 

You are probably right. It is easy to type things that we wouldn't say face to face. I have learned to be careful about what I type because of working at a university where all communications are by email. You don't want to p off your colleagues.

Stoenr, I love your photo in your sig. Something about seeing you three cars ahead of the 'vette is cool.