Hey guys, my air filter is getting a little filthy so I'm getting ready to change it. I've been shopping around online and saw a K&N air filter for $48 at autozone. Then I looked up an OEM G35 air filter that is $30 including shipping. Why is the aftermarket one more expensive? With that said, should I replace it with an aftermarket or get an OEM?

 

you only have to buy the K&N once. It's not a disposable filter. When it gets dirty you clean and re-oil.

 

Yes it's $18 more but you'll never have to buy another filter, just the kit that sells for $10 to clean and re-oil. K&N guarantees their filters for 100K miles, not bad for the extra $....
Gary

 

Are you guys using the K&N air filter as we speak? I'm a little skeptical at the fact that a used air filter, no matter how much you clean it, can be as clean as a brand new one. What is the oil for? Will using an aftermarket air filter void my warranty?

 

I recommend the Amsoil EA Nanofiber filter... it's cheaper than a K&N, filters the air much better, and is reusable. Oiled filters such as K&N can screw up your MAF sensor if you over-oil them or put the filter in before the spray agent has evaporated.

 

That's why you read the instructions and go lightly with the oil. I have been using them for about 6 years now and still no problems.

The oil problem happens because people are impatient, after washing the filter you must wait until it is 100% dry before spraying on the oil.

 

True.

Truer.

 

There is no such thing as truer.

People typically use K&N more for the performance aspect. They flow more air than paper filters or the amsoil nanofiber.

even a dirty K&N will flow more air than a new paper filter and when properly cleaned are as good as the day it came out of the box.

 

More truer. (except not)

http://www.performancemotoroil.com/KN_test.html

Another test, they come out basically even.

http://www.bobistheoilguy.com/airfilter/airtest3.htm

Another win for Amsoil:

http://www.cumminsforum.com/forum/3r...il-vs-k-n.html

 

All those links point to amsoil oiled foam filters, not the dry nanofiber filter referenced above. Even the amsoil site omits airflow comparison to the k&n and only compares airflow to a paper filter

http://www.amsoil.com/StoreFront/eaa.aspx

 

i just saved $112, based on what my local Infiniti dealer wanted to charge me to replace the (dirty) air filter...amazing.

is this the kinda treatment i can expect at a dealership where the waiting area has a 42" HDTV, 20 varieties of coffee & tea, and lush wood paneling?

 

If your in the department of replacing the air filter I would recommend going with maybe a ram air or cold air intake. The sound alone is a good reason to convert it. That is always the first mod I do on my car. The sound of it at full throttle is a beautiful thing. If your not into the sound than disreguard my post.

 

Just go with a Napa gold or Wix Air filter, thats what I did, its great.

 

They have to pay for all those nice things somehow.

 

K&N here, never had any issues.