closest to Subaru OEM bypass valve rate '18 Impreza 2.0
- Thread starter kmrinpa
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Wix/Napa Gold, Wix XP/Napa Platinum 
The Napa Platinum is on sale for 2 more weeks
The Napa Platinum is on sale for 2 more weeks
It may be a stupid question but why not just use a OE filter, its not like they are big bucks.
Are you sure it is a 2.0? Fram lookup shows a 2.5 four cylinder and a 3.6 six cylinder as the only options in '18. My 2005 2.0 turbo Impreza shows the PH6607 (13 psi) as the (wrong) original recommendation with the PH9715 as the correct 23 psi filter. The NAPA 47712 or 7712 also have the updated 23 psi recommendation.
I get them in 6 packs $42 inc a new washer from a Subaru dealer selling on Amazon, free prime shipping, that is only $7ea and no need to go anywhere.
I did the same thing except I bought the 12 pack. Came down to $6 before taxes and just over $6 with tax. I have 2 Subarus that use the same filter. 2 Oil changes per car per year. Should last me 3 years. I didn't get the washers though. I use an oil extractor so I haven't had to get underneath the car.
The Legacy and Outback have those engine options. The Impreza is a 2.0. I have a 18 Legacy with the 2.5 along with an 19 Impreza with the 2.0.
I've used aftermarket filters that don't meet the bypass spec (mostly Fram EGs) on a 2005 and 2017 Forester and 2013 Crosstrek. I'd venture thousands of people use quickly lube filters for hundreds of thousands of miles that don't meet. This topic has been debated over and over. If it makes you sleep better at night, as others said the NAPAs and WIX I think used to meet it for sure. But the OEM filter is cheaper (often) if The bypass matters. So if the bypass matters to you, just get the OEM filter.
Wix 57055Wix/Napa Gold, Wix XP/Napa Platinum
The Napa Platinum is on sale for 2 more weeks
In my opinion the Wix/NAPA filters are higher quality than oem.
Purolator's L14615 also meets Subaru's spec. However I haven't run a Purolator filter on anything since their media tearing issues began.
Yeah, but this month, the Platinum is actually cheaper than the Gold
The Wix XP/Napa Platinum have sub-standard filtration efficiency if we're going by the results of recent testing in the thread linked below:
https://bobistheoilguy.com/forums/t...ow-bubble-point-and-burst.334882/post-5789087
I use the Wix 57055 / Napa Gold 7055 filters on my Subaru engines and have zero complaints to this day. 27psi bypass spec to satisfy the bypass valve enthusiast crowd and they are built to the hilt with a very good filtration efficiency spec of 99% @ 23 microns.
I've used Wix, Hastings, and the blue Subaru filters without any problems. As long as the filter manufacturer says a filter is good for the application I don't worry about it.
Premium Guard PG4615 works great. Although we sold the Subi, I still use these on my Corolla.
https://bobistheoilguy.com/forums/threads/new-premium-guard-pg4615-23-psi-subaru-specd.298039/
https://bobistheoilguy.com/forums/threads/new-premium-guard-pg4615-23-psi-subaru-specd.298039/
About to buy a 2015 Suby with the 2.0L. What is the fascination with the 23psi bypass valve? Are there known issues with using a lower rating? Thanks!
The oil filter bypass spec originated in model year 2009 and I am of the opinion that enhancements in filtration since then have rendered it irrelevant as something to be concerned about. Frankly I simply tell people that if you are concerned than simply use the OEM oil filter or the Wix 57055 or its clone the Napa Gold 7055. If you are not a bypass valve spec enthusiast that you are free to use anything, I would personally recommend the Fram Ultra as I have had zero issues using it on my Subaru vehicles over the course of several years. I am currently using the Wix 57055 on my 2021 Outback simply because I got a case of them for cheap a while back.
I bought the car. Did a fresh oil change and threw a Fram PH7317 (probably my first Fram in 25 years?) on it. I placed a RA order on a bunch of maintenance stuff, and the Wix 57055 were only $4 ea and shipped from the same warehouse so no additional shipping charges, so I bought 10 along with 10 oil drain plug washers. The Wix now have the louvered center tube inside instead of the holes as pictured on RA site. Not that it matters to me personally, but this is likely a by product of the Mann/Hummel buying of Wix and Purolator as this looks more Purolator inside than it does Wix. Oh well, I'm not losing sleep over oil filters.
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It still has the Wix bypass and the Wix baseplate. It is still more Wix than Purolator.
Wix had been using slotted center tubes on a small number of Wix filters before the Mann/Purolator acquisition. The filters that have been changed will have the Purolator baseplate and no thread-end spring. An example is the 51348.
If you're still not convinced, there is the Wix XP, which has not been affected by the Purolator/Mann buyout.
It may not have been affected by the buyout but testing of similar filters has produced substandard results like I mentioned earlier in this thread, see linked thread below:
https://bobistheoilguy.com/forums/t...ow-bubble-point-and-burst.334882/post-5789087
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