This is the one to use my guy. On my fxt the cartridge is slightly taller than subarus. So more filter material and its easier to take off because its longer.
Personally I like K&N filters, they come with a nut welded to them so you can use a normal wrench instead of a filter wrench. Gotta be careful not to over tighten them though
Yes, it's absolutely worth it! in fact, I own one myself. I bought mine for $6,500 AUD with around 280,000 km on the odometer, and it's now at over 306,000 km and still going strong.
I have a kn 1 on my truck and winter is about every 1k miles I empty it. Its the 6oz canister and usually about half full. From may till like October I dont even have to look in it because it doesnt get more than an oz of oil build up in it. But man winter time with the condensation sucks.
Use quality oil and filters, changing them often. To this end, oil pickup and baffle are sound upgrades.
I changed the oil/filter at 590 miles on my 25 Forester wilderness.
K&N is good but sacrifices filtration for flow for better performance.
Not sure about mobil1 filters, but stay away from K&N oil filters. I've just used one for an oil flush after extensive maintenance work, and after just 100 km it had collapsed.
Avoid the blue Subaru filters. They are Fram made with cheap components.
K&N filters are some of the worst quality filters on the market.
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If choosing oil filter across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare oil filter across these categories:
In March 2026 on PartReview, oil filter K&N were overall better than OEM Subaru.
In March 2026 on PartReview, oil filter K&N were overall more popular than OEM Subaru.
By vote balance, oil filter K&N surpassed OEM Subaru:
By number of reviews, oil filter K&N surpassed OEM Subaru:
In March 2026, according to PartReview, oil filter OEM Subaru led more car-specific ratings than K&N:
OEM Subaru are chosen by owners of cars such as: Subaru Impreza, and others.
Oil filter K&N have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of oil filter K&N with: Fram, Mann, Wix, Mobil, Bosch, OEM Toyota, Motorcraft, OEM Volkswagen, OEM Honda, AMSOIL.
Also available: comparisons of oil filter OEM Subaru with: Fram, Mann, Wix, Mobil, Bosch, OEM Toyota, Motorcraft, OEM Volkswagen, OEM Honda, AMSOIL.
You can also see who is better among other oil filter manufacturers: Fram or Mann, Fram or Wix, Fram or Mobil, Fram or K&N, Mann or Wix.
