List of oil filters with 99% efficiency at 20 microns.

What do you guys think of this review?



I have seen this before. Its nice that he cut them all apart in one place. Having said that his ratings seem wildly inconsistent.

He rates the Fram orange can the worst, indicating that at least one of the reasons is it only has a 10K mileage guarantee. He does have others admittedly.

He rates the "best" middle option as the microgard, even though it has the same mileage guarantee as the Fram. How can he use 10K mileage guarantee to bash one, but disregard it on another? I like the microgard btw - but his rating system seems fluid to say the least.

Then he rates the Supertech MP as the best value - even though the filtration rating is the worst of the bunch.

He rates the Wix XP as runner up to the best (amsoil), but first says that he has no published filtration spec for the filter. How do you rate a filter highly when you don't even know how well it filters?

I think his ratings are simply his favorites and not of much use, but it is nice to see all the filters cut open in one spot. Also it being 10 months old, a lot of these filters have changed since unfortunately.
 
I have seen this before. Its nice that he cut them all apart in one place. Having said that his ratings seem wildly inconsistent.

He rates the Fram orange can the worst, indicating that at least one of the reasons is it only has a 10K mileage guarantee. He does have others admittedly.

He rates the "best" middle option as the microgard, even though it has the same mileage guarantee as the Fram. How can he use 10K mileage guarantee to bash one, but disregard it on another? I like the microgard btw - but his rating system seems fluid to say the least.

Then he rates the Supertech MP as the best value - even though the filtration rating is the worst of the bunch.

He rates the Wix XP as runner up to the best (amsoil), but first says that he has no published filtration spec for the filter. How do you rate a filter highly when you don't even know how well it filters?

I think his ratings are simply his favorites and not of much use, but it is nice to see all the filters cut open in one spot. Also it being 10 months old, a lot of these filters have changed since unfortunately.
Thank you for the heads up.
 
If you don’t do extended drains intervals I wonder if it even matters a lot if your filter is rated 99% at 20um or 99% at 30um or whatever.
 
If you don’t do extended drains intervals I wonder if it even matters a lot if your filter is rated 99% at 20um or 99% at 30um or whatever.
Yes, the longer the OCI, the more need for a higher efficiency oil filter. But nobody can say for sure exactly what that requirement definition/criteria is. That's why some people may use a higher efficiency filter regardless if their OCI.

Obviously if someone changed the oil every 1,000 miles there is less cumulative volume of dirty oil circulated through the engine (and less wear potential) compared to a 10,000 mile oil change. There are only two ways to keep oil cleaner: 1) Do an oil change or 2) Filter the oil better.

If an inefficient filter is used on a long OCI, then over the OCI there would be more debris going round and round to cause wear compared to cleaner oil from using a higher efficiency filter. The level of wear is proportional to the cleanliness if the oil times how many times the oil was circulated through the engine.
 
Yes, the longer the OCI, the more need for a higher efficiency oil filter. But nobody can say for sure exactly what that requirement definition/criteria is. That's why some people may use a higher efficiency filter regardless if their OCI.

Obviously if someone changed the oil every 1,000 miles there is less cumulative volume of dirty oil circulated through the engine (and less wear potential) compared to a 10,000 mile oil change. There are only two ways to keep oil cleaner: 1) Do an oil change or 2) Filter the oil better.

If an inefficient filter is used on a long OCI, then over the OCI there would be more debris going round and round to cause wear compared to cleaner oil from using a higher efficiency filter. The level of wear is proportional to the cleanliness if the oil times how many times the oil was circulated through the engine.
Thank you
 
To my knowledge, the following oil filters have tested at or above 99% at 20 microns (*or claim to be without any evidence proving otherwise)

Fram Ultra & Tough Guard, AC Delco Ultraguard Gold, Royal Purple, Purolator One, Amsoil Ea,

Purolator Boss, Wix XP/Napa Platinum are closer to ~62% at 20 microns.

Wix/Napa Gold, Champ Labs (and supertech), K&N filters with the welded nut, and Mobil 1 EP oil filters are ~95% at 20 microns

Honorable mention: Microguard Selects are 99% at 25 microns
the wix xp is 35 microns at 99percent
 
the wix xp is 35 microns at 99percent
Not really ... more like 88% @ 35u. The Wix XP was even less efficient than the Boss in an official ISO 4548-12 test as shown below.

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Never understood why everyone and their mom uses wix filters when they don't filter well.
They are going by brand loyalty and reputation based on other's "beliefs" about the filter, not really knowing what the efficiency really is. Wix doesn't even list the XP efficiency on their website. Who does that, unless there's a reason not to show efficiency info to the consumer. At one time Wix showed the XP to be 50% @ 20u, which isn't far off from the Ascent ISO test above.
 
They are going by brand loyalty and reputation based on other's "beliefs" about the filter, not really knowing what the efficiency really is. Wix doesn't even list the XP efficiency on their website. Who does that, unless there's a reason not to show efficiency info to the consumer.
Kind of like how everyone drives a Ford super duty when they know the engine is garbage. Not the latest model, but the last two were
 
They are going by brand loyalty and reputation based on other's "beliefs" about the filter, not really knowing what the efficiency really is. Wix doesn't even list the XP efficiency on their website. Who does that, unless there's a reason not to show efficiency info to the consumer. At one time Wix showed the XP to be 50% @ 20u, which isn't far off from the Ascent ISO test above.
This fits my former belief. I trusted them blindly given prior experience and history and got lazy, stopped checking, and assumed they wouldn't change a proven history of good products. After seeing what absolute sh*t they started churning out, I then switched exclusively to Amsoil and got some cartridge filters with glue on the inside. I am still looking for synthetic media filters that would work for a toyota 5.7L engine and unless I "see the light," I am likely going to go with OEM chicken sh*t filter for the next change. I'm now jaded.
 
Beta means 50 percent if I remember right
Kind of.

Beta ratios are values that describe how much of specific sized particles are filtered at certain rates. Wix typically lists what size particles are filtered at a 50% (beta value 2), and 95% (beta value 20) multipass rate

Wix lists beta values of most of their regular filters at 2/20=6/20, which means that their filter media catches 50% of 6 micron dirt and 95% of 20 micron dirt.

For a more in-depth explanation of beta ratios you can visit https://www.machinerylubrication.com/Read/564/filter-beta-ratios
 
The only Chrysler products I recall burning oil were the early 90s minivans with the Mitsubishi engine. And those have long disappeared from the roads around here. Probably has been 20 years or more since I've seen one.
Virginia must simply dispose of its unfortunate quantity of ownership of ChryCo vehicles at a quicker pace than the rest of the country…
 
Wix lists beta values of most of their regular filters at 2/20=6/20, which means that their filter media catches 50% of 6 micron dirt and 95% of 20 micron dirt.
And to add, Wix uses their own Beta Ratio format that doesn't reflect how most of the filter industry expresses it. But people can figure the Wix format once they understand it as you've described.
 
Ad to add, Wix uses their own Beta Ratio format that doesn't reflect how most of the filter industry expresses it.
so these are the regular white filters? Or are they all black now? That's not bad if the info that tasch provided is correct.
 
so these are the regular white filters? Or are they all black now? That's not bad if the info that tasch provided is correct.
Who knows now sunce M+H is now owners of Wix. I looked at some of the regular Wix filters for a 5.0 Coyote today on the Wix website and it didn't show any Beta Ratio info, no efficiency info at all.

I'm calling Wix tomorrow about the XP, and I'll also ask about the regular Wix filters.
 
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