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Spare parts reviews ➔ All comparisons ➔ K&N ➔ AMSOIL

Oil filter K&N or AMSOIL

Reviews
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K&N
AMSOIL
AMSOIL › Oil filter
Low_Cap_2168
  • Warning light:
Rating 4.0

Well I see you went stp which is not as good as OEM. I run amsoil filters and have no issue, I prefer amsoil to OEM because amsoil have tested at a 99 percent particles are filtered out.

Pros: 99 percent particles filtered
Cons: not as good as OEM
Vehicle: Toyota
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K&N › Oil filter
Mizar97
Rating 4.0

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

Pros: nut welded to them
Cons: careful not over tighten
Vehicle: Subaru
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K&N › Oil filter
Motor-Professor6268
Rating 4.0

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.

Pros: little oil build up
Cons: condensation sucks
Mileage: 1000 km
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K&N › Oil filter
BenDoverandillshowyu
  • Leaks:
Rating 5.0

That won’t happen if you were using a K&N oil filter. All these cheap brand filters are not sturdy and will collapse when you’re trying to take them off when stuck… either The Black K&N select filter or the white Premium filter will avoid this problem from happening…

Pros: sturdy, avoids collapsing
Cons: cheap filters collapse
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AMSOIL › Oil filter
Contranovae
Rating 5.0

With a good filter (Fram synthetic endurance, Purolator boss, Amsoil) and a modern high performance oil such as Amsoil signature and Pennzoil ultra platinum you are good for at least 17.5k with the Amsoil and 12.5k with the Pennzoil under 'severe' conditions.

Pros: good filter, high performance
Mileage: 17500 km
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AMSOIL › Oil filter
Interesting_Bill_456
Rating 3.0

I'm currently using Mobil 1 ESP 0w-30 and an Amsoil filter. 2024 Rav4 Prime XSE with 44,000+ miles. Several used oil analyses flagged high fuel dilution so I want the thicker Euro oil in there and also change it early every 5,000 miles.

Cons: high fuel dilution
Vehicle: Toyota
Mileage: 44000 km
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K&N › Oil filter
ElMurkel
  • Warning light:
Rating 1.0

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.

Cons: collapsed after 100km
Mileage: 100 km
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Which oil filter to choose — K&N or AMSOIL?

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:

Comparison of oil filter K&N and AMSOIL
  1. PR Score.
  2. Overall ranking.
  3. Vote balance.
  4. Average rating.
  5. Number of reviews.
  6. Feature ratings.
  7. Car owners’ choice.

Which oil filter are better — AMSOIL or K&N?

In March 2026 on PartReview, oil filter AMSOIL were overall better than K&N.

  1. K&N received a PR Score of 70 out of 100, and AMSOIL scored 94 points.
  2. K&N ranked 9 in the overall ranking, and AMSOIL ranked 7.
  3. The average rating is higher for AMSOIL (4.5) than for K&N (3.6).
  4. Oil filter AMSOIL have better feature ratings than K&N:
    • Warning light - owners believe, that this property for AMSOIL is better than K&N.
    • Leaks - drivers claim, that this property for AMSOIL is outperforms K&N.
    • Smell/smoke - reviews suggest, that this property for AMSOIL is preferred to K&N.

Which oil filter are more popular — K&N or AMSOIL?

In March 2026 on PartReview, oil filter K&N were overall more popular than AMSOIL.

By vote balance, oil filter K&N surpassed AMSOIL:

  • For K&N, the ratio of positive (214) to negative (91) votes is 123 votes.
  • For AMSOIL, the ratio of positive (89) to negative (5) votes is 84 votes.

By number of reviews, oil filter K&N surpassed AMSOIL:

  • For oil filter K&N there are 99 reviews: 66 positive, 8 neutral, 25 negative.
  • For oil filter AMSOIL there are 31 review: 29 positive, 1 neutral, 1 negative.

Which oil filter do car owners prefer — K&N or AMSOIL?

In March 2026, according to PartReview, oil filter K&N and AMSOIL have not taken top places in car-specific ratings. You can help by adding your review about these manufacturers.

Other comparisons of oil filter

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, Mahle.

Also available: comparisons of oil filter AMSOIL with: Fram, Mann, Wix, Mobil, Bosch, OEM Toyota, Motorcraft, OEM Volkswagen, OEM Honda, Mahle.

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.

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