Air Filter Suggestions - Donaldson vs. Fleetguard vs. Baldwin vs. Fleet Air Filters vs. K&N Filters


Mike

Well-Known Member
Staff member
If you have a newer model truck (and own it), then you are aware that the cost of these filters is a bit expensive. You should also be aware that shopping around and buying them before you need them can save you lots of money.

Anyhow, I bring this up because in almost 200,000 miles, I have been through 3 air filters on my truck, and about to purchase the 4th. The 3rd air filter, a Baldwin, was just installed a couple weeks ago, and was immediately more restrictive than the Fleetguard that was taken out and thrown away. I literally took the filter out today just to see if they actually replaced it.

First off, I have no clue what filter was in this truck from day one. Never looked. What I do know is that the restriction was virtually non existent (per the gauge inside the truck), and even at near the 100k mark when I replaced it, the restriction was fairly low under any heavy load. I'm kicking myself for not checking to see what brand was in there, and plan on calling Fitzgerald to see if they can tell me.

Fleetguard (FA27688) was 2nd. Honestly, I thought it was a Donaldson, never checked to verify it when it was installed, but was told it was a Donaldson. Regardless, it was a decent filter. Ran it about 80k, replaced it as it was beginning to show some significant restriction on the gauge, and I could tell the engine was staving for air under a load.

Two weeks ago, in went a Baldwin filter, part# ca5500. I pulled multiple loads that were extremely light, so didn't really pay much attention. Did notice a bit of restriction on the gauge almost immediately, but didn't think too much about it. Then came the heavy pulls, and the gauge was showing more restriction than ever, on a brand new filter. My first thought was that they didn't replace the filter, and I was on the phone taking care of something else at the time it was replaced so I didn't see it go in.

I don't plan on putting another Baldwin filter in. Maybe I just got a bad filter, but not going to take that chance again.

Now, I am in the search for a filter. Fleetguard is easy enough to find, everyone carries it, can be had for under $100.00. Price, though, is not as important as performance.

I was all set to buy a Fleet Air Filter today. Everyone I have talked to has spoke very well of these filters. $450.00 initial purchase, but it's a lifetime filter, better airflow claims, and claims to filter better. I've spoken with a couple drivers who did before and after oil samples which showed cleaner results with the Fleet Air Filter, and they insisted that they had better fuel economy and performance. Didn't buy it because they are back ordered. Spoke with the guy who makes them, and they are trying to catch up from massive sales during the truck show. Still plan on buying it, but going to have to get another filter in the mean time. Checking with the Joplin44 tomorrow to see if they happen to have one in stock, and will drive up there after I get home and pick it up.

Which brings me to Donaldson. Of all big name filters, this is the one that gets the best reviews from what I have seen. Just a matter of finding somebody who has one in my neighborhood. They are a bit more expensive, so not as commonly carried.

In my searches today, I found out that Wix and Fram also make a filter for my truck. Extremely expensive, but they make them. Found them at Oreilly and Napa.

So, is there a filter that you swear by? A filter that you refuse to buy?
 

Which brings me to Donaldson. Of all big name filters, this is the one that gets the best reviews from what I have seen. Just a matter of finding somebody who has one in my neighborhood. They are a bit more expensive, so not as commonly carried.
Midway Freightliner is where I will stop and get a lot of my Donaldson Filters. Price seems to be OK.

The other place I have found cheap parts is Freightliner in Troy ILL. If I can plan the repair enough out. THIS is the go to place for me to get parts. Price wise.
 
Do not use K&N they don't filter as well even if you keep up maintenance on them. I'm a fan of fleetguard but I have always been a Cummins guy.

If I remember right you have a KW the factory airbox filter would of been a Donaldson filter.

It's all about what works for you though. I think Donaldson and fleetguard are good filters.

Stay away from Baldwin, fram and K&N.

Just my two cents.
 
If I remember right you have a KW the factory airbox filter would of been a Donaldson filter.

KW with a Detroit, but yeah, it's a PACCAR box. Since it's a glider, I'm gonna have to call and find out what they put in it just to satisfy my curiosity.
 
Paccar box from factory has a paccar bagged filter but it's made by Donaldson. I forgot you got a glider, I'd ask the guys that put it together.
 
Paccar box from factory has a paccar bagged filter but it's made by Donaldson. I forgot you got a glider, I'd ask the guys that put it together.

I had hoped to get a factory filter today at the KW dealer down in Laredo. Nope, they only had Fleetguard, and not for the price I was willing to pay for it.....
 
I replace my filters in April and October. Whether it's needed or not.

That exhaust manifold did a good number on my filters. Really bad this spring.
 
I have a Fleet Air filter I I stalked on my Cascadia. I got a measurable improvement on my fuel economy. 0.4 - 0.5 mpg.

I can hear the turbo now. :D
 
I have a Fleet Air filter I I stalked on my Cascadia. I got a measurable improvement on my fuel economy. 0.4 - 0.5 mpg.

I can hear the turbo now. :D

Those seem to have really helped the cascadia. Took a while to get the filter designed.

Fleet is on a pretty big backorder right now, so I stopped in at truckpro by the house and picked up a Donaldson. Got them to knock 50 off the price though and match up with the online prices. Still expensive though.
 
Those seem to have really helped the cascadia. Took a while to get the filter designed.

Fleet is on a pretty big backorder right now, so I stopped in at truckpro by the house and picked up a Donaldson. Got them to knock 50 off the price though and match up with the online prices. Still expensive though.
Its handy to have an extra filter element... makes changing it go smoother. Definitely don't wash it in mama's kitchen sink unless y'all want to be exiled to the dog house for life.
 
Time to change the Cascadia/DD15 Fleet Air filter element...

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Gettin' ready.

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Start with saturating the filter element with Klotz Oil.

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Element installed in filter housing. Make sure the foam filter is inserted into the slots at the sides and in the faceplate.
 
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Installation in air filter box...

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Top end of a Cascadia/DD15. The round black thing is the induction side of the filter housing. There's two retained screws at the left side that secure it.

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Filter box cover removed with filter and dirty element. It's a press fit, so you just pull it out.

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Clean filter element installed. All that remains is to reinstall the box cover and to secure it.

The filter element is washed in water and detergent. The manufacturer recommends Dawn dish detergent. Let it dry and its ready to go. Having an extra filter element helps speed the whole process along.

The filter frame is aluminum, and is always gunked up when it comes out. Any degreaser and paper towels will clean it up. I have a can of spray brake cleaner that works well... smells like it's Trichloroethane. That cuts through the crud quite well.
 
I switched to Donaldson air filters but can’t tell if they are better or worse than what was in there
Donaldson is the best throw away filter out there, IMO.

That said, I wish I had bought my Fleet Air filter sooner. Noticeable performance gains. A little labor cleaning it, but better than having to buy another filter.
 
How long does it take to clean?
Actual time working? Not much. I take mine out (5 minutes), take it to the garage and take it apart. (30 seconds to take it apart). Soak the filter elements in soap and water. Soaking overnight is great, I usually just soak them for a couple hours

Rinse them, and reassemble. Takes maybe 10 minutes to oil and reassemble.
 

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