Wix WL10255 oil filter

[HotRod Hudson]

I am a week away from the 2nd oil change on a new 2025 Tahoe 5.3L at approximately 1500 miles. My plan was to use a Wix WL10255 filter & after reaching out to the company I’m a bit disappointed to hear the filters info.

Company reply to filter specs:
Beta Ratio1: 2/20=6/20 : this is 50% efficient at 6 microns and 95% efficient at 20 microns.

I was hoping to hear the 99% micron level but they have yet to reply. On their app they say 21micron filtration but no percentage. I’d really like to find a filter that can filter the greatest % at the lowest micron. Thus I wanted to see a 99% at “x” micron.

If not Wix then what filter am I looking at using?

 

[martinq]

CarQuest Premium is 99.5% @ 20u
CarQuest EP is 99.5% @ 25u

 

[BrendanC]

carquest premium 84502 99.5%@20um. look up my many cut and posts.

 

[dogememe]

Microgard Select or some other PG filter. Enjoy your new Tahoe! Those are very nice

 

[RobbS]

Congrats!!
I use MicroGard Select for short intervals like when I did my 5 intervals with Valvoline Restore and Protect, 5k miles each run.

 

[MrBubba]

The new Wix XP is 99% at 23 Microns and so far what I seen of them being cut open they were perfect.

 

[ZeeOSix]

Company reply to filter specs:
Beta Ratio1: 2/20=6/20 : this is 50% efficient at 6 microns and 95% efficient at 20 microns.

I was hoping to hear the 99% micron level but they have yet to reply.

95% @ 20u will probably be pretty close to 99% @ 25u.

 

[fantastic]

This model doesn't appear to be as bad as you think it is. Continue to use it or move over to the other brands previously mentioned.

 

[RDY4WAR]

Wix has been known to white wash their data. In ISO 4548-12 multi-pass filtration testing, the Wix WL10255XP performed much worse than advertised. Looking at Wix's site now, I noticed they no longer advertise the beta ratio for the WL10255XP. That filter also had a bypass leak during the bubble point portion of that testing. Wix is not the brand they were 10 years ago. Their quality went downhill after they were acquired by M+H. As has been suggested, a Microgard Select or Premium Guard will be your best option currently.

 

[ZeeOSix]

That filter also had a bypass leak during the bubble point portion of that testing.

The one that had the bubble point bypass leak wasn't the same exact filter ran in the ISO test, so who knows if that one was leaking in the ISO test. He got the bubble tested filter's bypass valve to stop leaking by actuating it a few times IIRC.

 

[RDY4WAR]

The one that had the bubble point bypass leak wasn't the same exact filter ran in the ISO test, so who knows if that one was leaking in the ISO test. He got the bubble tested filter's bypass valve to stop leaking by actuating it a few times IIRC.

Yes. I should've been more specific. By "that filter", I meant that same part number filter, not the same exact one. It is possible the one tested in ISO 4548-12 also had a bypass leak which would skew the results.

 

[ZeeOSix]

Yes. I should've been more specific. By "that filter", I meant that same part number filter, not the same exact one. It is possible the one tested in ISO 4548-12 also had a bypass leak which would skew the results.

Maybe ... but keep in mind that Ascent's ISO test as done in March 2021, the date is on the graph, upper RH corner area. Back then the WIX XP was probably still around the 50% @ 20u efficiency. Ascent's graph shows around 63% @ 20u, so not far off from that. And of the bypass valve did leak some, it would have certainly been at a much lower level than the leak volume associated with these Champ Lab/Fram filters that have a ruffled and warped leaf spring.