Air Filter!

94 SENTRA, 1.6LITER, HIGH MILEAGE.
QUICK QUIESTION, HOW OFTEN SHOULD I CHANGE MY AIRFILTER?

IS YOUR CAPS LOCK KEY BROKEN? OR ARE YOU UNABLE TO CONTROL THE SOUND OF YOUR VOICE?

air filter recommendation is like 30,000 miles but i change it when it looks dirty. check both sides of the panel filter.

IS YOUR CAPS LOCK KEY BROKEN? OR ARE YOU UNABLE TO CONTROL THE SOUND OF YOUR VOICE?

lol! Sorry abou that. I was at work,we only use caps.
and thanks for the help.
One more question!

I also have a gift car from a local bodyshop, (about 100) and it is expiring soon.
My car runs fine. How should I use the gift card on my car?
I don't know much about cars, but i know everything in my car is still manufacture components.
I mean anything I can tune up? or upgrade?

hmmm a bodyshop gift card...not alot you can do with that. possibly clean up some rust spots or dents, or you could throw down a few more hundred for a paint job. if the shop does other stuff like exhaust you could have a 2" cat back custom bent and get a nice muffler to have them weld on...

matter of fact if they do engine work and stuff, get a brake job or timing chain replaced...something thats a pain and youd have to do anyways soon

y dont u have them do a engine clean thing to remove as muich sludge out of the engine for ya. timeing chain also sounds pretty good.