Post your latest engine/cabin air filter change

2025 Nissan Armada Pro-4x 6,000 miles
Nissan Air Filter 16546 7JA0A

Many pleats had tiny micro asphalt and rocks in them that I rubbed between my fingers.

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2005 Toyota Matrix XR
Cabin air filter replaced.
174k miles, about 15 mo. and 9k miles since last replacement. The old one was covered in leaves and after I vacuumed the leaves away, I noticed that it had a few holes in it. The perils of parking under an oak tree...

Out: Ecogard XC35491
In: Purolator One C35491

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Newer mb glc Of some sort. Absolutely beat me up trying to get the filter cover back on. I ended up trimming it to fit as theres no way to put it back on once the car is built.

I had to pull with all I had to get the cover out as it gets hung up on the bottom of the dash and the floor.
 
I wonder who makes those STP? I was perusing filters for my 4Runner, and this one looked great for the money.

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I don’t know. The STP filters seem well made even though the cabin air filter surface thickness has gone down a bit over the years. They used to be much thicker. I get most of my filters from Autozone. Price and ease of purchase are great. Both were around $20 and I was in and out of the store quickly.
 
OEM Subaru air filter for my 18 Legacy. 30,183 on filter. Old was a Fram Ultra. Looked ok on the inside but the outside was getting a little dirty. I'll try and take a pic.
 
OEM Subaru air filter for my 18 Legacy. 30,183 on filter. Old was a Fram Ultra. Looked ok on the inside but the outside was getting a little dirty. I'll try and take a pic.
Attached are pics of the replaced Fram Ultra. The Fram has a lot more pleats than the OEM Subaru. Not sure about thickness but I expect the Fram to last the 30k since the OEM interval is 30k. I don't have pictures of the last filter which was also a Fram Ultra but I don't remember it looking this rough.

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Changed out the Engine and Cabin Filters in both of my Broncos for the new year; 2023 with 37k miles on the right and 2024 with 32k miles on the left. 2.7L ecoboost for both. The used filters all had 1 year and about 15k miles. Replaced all with OEM/Motorcraft filters.

I’m not sure what’s going on with the wavy pleats, but the end caps were kind of deformed too, although I found no tears. The ones from the factory looked about the same when I did the first round of filter changes last year. I have been getting about 2 ppm Si / 1k miles out of both engines with these filters on UOA. Considering trying a Donaldson Powercore on one of them just to see if Si drops since they make a drop-in, but the cost is 6x more. The ‘24 does some off roading in the dust from time to time, plus it is very dusty in general where I live, especially during spring thaw.

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Compared to new:
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Cabin Air Filters:
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Changed out the Engine and Cabin Filters in both of my Broncos for the new year; 2023 with 37k miles on the right and 2024 with 32k miles on the left. 2.7L ecoboost for both. The used filters all had 1 year and about 15k miles. Replaced all with OEM/Motorcraft filters.

I’m not sure what’s going on with the wavy pleats, but the end caps were kind of deformed too, although I found no tears. The ones from the factory looked about the same when I did the first round of filter changes last year. I have been getting about 2 ppm Si / 1k miles out of both engines with these filters on UOA. Considering trying a Donaldson Powercore on one of them just to see if Si drops since they make a drop-in, but the cost is 6x more. The ‘24 does some off roading in the dust from time to time, plus it is very dusty in general where I live, especially during spring thaw.

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Compared to new:
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Cabin Air Filters:
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I wonder why Ford didn't use the rectangular drop in style used in the 2.7 powered F-150s? My guess would be the amount of space under the hood.
 
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I wonder why Ford didn't use the rectangular drop in style used in the 2.7 powered F-150s? My guess would be the amount of space under the hood.

Not sure, maybe for compatibility with the Bronco’s other 2.3L engine option and/or the water/sand trap it uses to keep that stuff out of the filter. Maybe the larger surface area of the cylinder shaped filter was desired due to anticipated dustier conditions.

The Bronco routes air from the driver side of the grill over the top of the radiator and over to the filter on the passenger side where the battery would be in the F-150. There is a little hinged door on the ramp to the filter housing for water to fall out of.
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