Air Filter

ManualF150 · #1 07-02-2009, 10:28 AM

When should I change my air filter in my truck? I got like 28k on it right now... but I was reading the Scheduled Service Guide, and it said at 30k to check it. I checked it the other day, and it was just a little dirty... but my Filter Minder hasn't moved since the winter time because it would get clogged with snow, but now with summer, it hasn't moved.

I might wait until 40k.

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glc · #2 07-02-2009, 02:12 PM

I'd put an Amsoil filter in it. It's a dry cleanable nanofilter and guaranteed for 100k.

c1t1d1 · #3 07-02-2009, 03:10 PM

Change it per the manufactor instructions, or when it looks too dirty or feels like your not getting enough air. I have a volant cai with power core filter thats good for 100k also. I check it every few weeks and clean as can be.

K-Mac Attack · #4 07-02-2009, 03:47 PM

Are you talking about a paper filter? If so then I would do so every 6 to 9 months. May be a little overkill but they are cheap and easy to replace. I think the paper filters are better since they don't foul the maf and.are cheap and effective. Just say no to FRAM.

ranger81 · #5 07-02-2009, 10:02 PM

Quote:

Originally Posted by K-Mac Attack

Are you talking about a paper filter? If so then I would do so every 6 to 9 months. May be a little overkill but they are cheap and easy to replace. I think the paper filters are better since they don't foul the maf and.are cheap and effective. Just say no to FRAM.

Ouch... just stuck a Fram air filter on a couple months ago. I had 25,000 the filter and was visibly dirty.

ManualF150 · #6 07-02-2009, 10:18 PM

Quote:

Originally Posted by ranger81

Ouch... just stuck a Fram air filter on a couple months ago. I had 25,000 the filter and was visibly dirty.

Yeah, stay away from FRAM... they don't manufacture them right for our trucks and they separate or even implode leaving the engine susceptible to dirty air.

I am not going with aftermarket junk... I'm sticking to Motorcraft... I was just asking when was a good time to change it, thats all.

Raptor05121 · #7 07-03-2009, 12:14 PM

K&N makes excellent drop-ins. Or go full blown and get a CAI!

They say on my filter to service every 50K but past 20K she was REALLY dirty so....

glc · #8 07-03-2009, 02:23 PM

Amsoil is FAR from being junk - you need to read up on it before you blow it off like that. It filters better than anything else out there.

You guys using K&N's and other oiled filters are letting more crap through than even a cheap paper filter, by the way.

Raptor05121 · #9 07-03-2009, 03:55 PM

Quote:

Originally Posted by glc

You guys using K&N's and other oiled filters are letting more crap through than even a cheap paper filter, by the way.

since when did clean air become crap?

glc · #10 07-03-2009, 06:22 PM

Clean air also happens to have dust in it...............................

The oiled filters are made to minimize restriction and maximize airflow. They don't trap anywhere near as much dirt and dust as a paper filter, and a nanofilter filters out even finer particles.

Raptor05121 · #11 07-03-2009, 11:32 PM

Quote:

Originally Posted by glc

Clean air also happens to have dust in it...............................

The oiled filters are made to minimize restriction and maximize airflow. They don't trap anywhere near as much dirt and dust as a paper filter, and a nanofilter filters out even finer particles.

I'd like to see the sources that make you believe that. dirt sticks to an wet medium more than it does a dry one. my K&N after 20K miles was BLACK and dirtier vs the hundreds of other OEM filters from the past 12 years ive had. oil has nothing to do with the restriction. the size of the conical head vs. the stock one is bigger- thus allowing more flow.

Barrett · #12 07-04-2009, 01:12 AM

I know I plan on cleaning my K&N every 15k miles and I would replace it if I had a paper filter at the same pace. glc I dont understand how you think a paper filter is better than a K&N. At the autozone I bought mine at they had this test thing showing how the K&N allowed more airflow in as compared to a paper filter, there was a big difference.

glc · #13 07-04-2009, 03:37 AM

Do some forum searches, guys - this has been discussed before. A K&N passes a lot more dust than a good paper filter.

Yes, a K&N is less restrictive. No argument there. However, I'd rather have CLEAN than a bit more air. My truck did not run one bit better with a K&N than it did with a Motorcraft or Wix paper filter or my Amsoil nanofilter. However, with the K&N, my intake tube got a LOT more dusty than it did with the paper filter or the nanofilter in there.

Raptor05121 · #14 07-04-2009, 06:28 PM

what would we search for? common sense says if you get a piece of paper, wet it, and drop it in sand and pick it up its going to have more than if you get a dry piece of paper, drop it in the same sand and pick it up.

maybe you didnt oil the K&N right? my tube after 30K miles is still shinier than a babies bottom

glc · #15 07-04-2009, 07:22 PM

The "holes" in the filter are larger with a K&N. It doesn't matter whether it's wet or dry.

I didn't oil it. It came preoiled sealed in a plastic bag, and one would think it was properly oiled at the factory. It was sticky and the right color.