I guess it was a week ago now when I went to get my oil changed. Naturally, being a girl I go into that situation defensive. You start with, "I just want an oil change, nothing else". Then they come into the waiting room and say, "Can we just show you a few things?" UGH! So in a effort to not be "mean" I humor them and listen to them tell me all of the things I need to replace, how I need a tune up, etc, etc, etc. So he showed me both my interior cabin filter and my engine air filter. I had to agree I could see they both needed to be changed but I said no thank you to spending $44 to get them changed. Immediately after I paid and left I drove straight to Auto Zone. For you locals, the one in Pflugerville on FM685 by Sonic.
At Auto Zone I told them what I needed: (1) interior cabin air filter and (1) engine air filter for a 2006 Toyota Matrix. Two seconds later, they brought them up to the counter to check out. Showed me 2 options for the engine one, I chose the better quality one which happened to be only $1 more. I already knew how to change my interior cabin filter. (mine is just behind the glove compartment, SO easy to get to) So, I asked the guy to show me how to change the engine one. I was a little shocked at how easy this one was to change too. It was a compartment right on top, didn't even get dirty changing it.
All in all I spent $33, $10 less than the oil change place and now I know how to change them both!