I've taken to buying made in japan mazda rx8 filters for my 2015 impreza.
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.
Since I was ordering oil from Amsoil I went that route and the filter was amazingly robust.
The Mazda filter has a higher capacity and larger design compared to the OEM Subaru filter. So, it will hang down slightly lower than OEM. The anti-drain back pressure seems to be similar, but I have never verified myself. I ran this filter on my 2005 Impreza WRX STi for a few years.
I’d high recommend doing an oil change with 10w30, putting on a factory oil filter (they’re about $10 at the dealer and come with a crush washer), and seeing how it behaves then. I recommend factory filters because for some very odd reason, I had less (or no) lifter tick when I used factory filters vs. aftermarket.
I use Jiffy Lube to change my oil but I bring my own oil and filter (Amsoil).
Mazda oil filters are good but there are aftermarket filters equal and some are better than Mazda filters. Call the independent shop and ask what oil and filter they use then research it.
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.
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.
Just had an amsoil filter fail at the gasket. The inner diameter was too small causing a crease in the gasket that leaked after 4 months use. Nearly ran me dry.
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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 AMSOIL were overall better than OEM Mazda.
In March 2026 on PartReview, oil filter AMSOIL were overall more popular than OEM Mazda.
By vote balance, oil filter AMSOIL surpassed OEM Mazda:
By number of reviews, oil filter AMSOIL surpassed OEM Mazda:
In March 2026, according to PartReview, oil filter OEM Mazda led more car-specific ratings than AMSOIL:
OEM Mazda are chosen by owners of cars such as: Mazda 3, and others.
Oil filter AMSOIL 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 AMSOIL with: Fram, Mann, Wix, Mobil, K&N, Bosch, OEM Toyota, Motorcraft, OEM Volkswagen, OEM Honda.
Also available: comparisons of oil filter OEM Mazda with: Fram, Mann, Wix, Mobil, K&N, Bosch, OEM Toyota, Motorcraft, OEM Volkswagen, OEM Honda.
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.
