Wix oil filter design philosophy

[Navi]

The Wix website is an interesting read.

https://www.wixfilters.com/en-us/support/training/wix-performance.html

Basically.their standard Wix oil filter is designed around balancing out their 3 measures of oil filter greatness. The Wix XP filter is designed for extended drain intervals but its not the best according to their design philosophy.

I use the standard Wix filter because the price is right and its better than what came with the car. If you are one of those guys who wants the best oil filter that would be the Purolator Boss.

Im not sure what extra benefit would be with the worlds greatest oil filter whether that be Purolator Boss or Fram Endurance. Maybe if I was doing track racing, daily.towing or extreme off road I would use those to be on the safe side.

We have a 2015 Toyota RAV4.where the oil has been changed according to the maintenance light meaning 7 to 10k miles. Whatever the dealer or local mechanic had in stock was used for the changes which means I have no idea what they put on. Here we are 10 years and 150k miles later and it still runs good.

At the end of the day I think most people are best served with the standard Wix filter. Better than what came with the car...less than 5 dollars on Rockauto.

 

[ZeeOSix]

An oil filter can have high efficiency and high capacity, while still have a pretty low pressure drop (ie, dP vs flow curve). The OG Fram Ultra and Titanium are good examples of that. Of course it takes media like used in those filters, being dual layer wire-backed full synthetic depth filtering media. When using a standard blend media, it's still possible to obtain something close to the OG Ultra level, and increasing the media total area goes a long way to get better capacity and lower pressure drop. The old yellow Purolator PureOne was very efficient and has a low dP vs flow curve, and it was just a cellulous/sythetic blend media. But it has a lot of media area back then. One thing I've notice over the years is that manufacurers keep cutting back on the media are. One example are Motorcraft filters, specifically the FL500S which I've cut open after use and measured the media are. Along the line, it was decreased from 227 sq-in to 120 sq-in ... almost a 50% reduction. Probably a cost cutting measure, but something I didn't like to see.

 

[ZeeOSix]

This is what we see with the Purolator Boss and Wix XP type of filters - ie, low efficiency but relatively high capacity. They are also inefficient because they release (slough off) a lot of the already captured debris due to increased dP as they load up. Ascent's ISO 4548-12 efficiency test showed how bad the Boss and Wix were in this respect.

But as mentioned above, there are ways to have high capacity and still maintain a high efficiency even as the filter loads up. Filters with high ISO 4548-12 efficiency have to by definition be able to hold already captured debris very well. They can't be that high in efficiency without being able to hold captured debris very well as the filter loads up and the dP increases.

 

[Glenda W.]

I used Wix for over 20 years. It really is a shame what M+H did to them. Now First Brands is doing the same to Fram.

 

[Sumboodie]

Where does it mention anything about std vs XP?

XP has higher filtration and longevity due to different filter media than the std. It only exists for engine oil filters that I've seen.

I run Wix for engine oil, trans, engine air and air brakes, hydraulic, coolant, etc on dozens of pieces of equipment.
It's by far the most used in the shops at work as well.... in fleets of hundreds of trucks and equipment. (Some shops thousands)

 

[Olds394]

I used Wix for over 20 years. It really is a shame what M+H did to them. Now First Brands is doing the same to Fram.

i trust M+H to put Wix back where they were.
You really would think it would have happened by now though. Lol

 

[mazdamonky]

over the past 5 years, I have yet to find a wix that can even filter correctly. They can't hit one mark of greatness if they can't get those center tube louvers open. If they could somehow figure out how to open them like mobile one and the stp filters i see at autozone, it would be a different story.

 

[doitmyself]

I run Wix for engine oil, trans, engine air and air brakes, hydraulic, coolant, etc on dozens of pieces of equipment.
It's by far the most used in the shops at work as well.... in fleets of hundreds of trucks and equipment. (Some shops thousands)

I see the same thing, and the idea is "if large shops trust them for very expensive equipment, then they must be good". But it doesn't mean that WIX is still the same quality it was in the past. Maybe the fleet filters are not yet being downgraded like the passenger car filters? Who knows? I no longer trust WIX on my workplace ag. and fleet applications. Another sad aspect of getting old - Change!!

 

[Glenda W.]

This Wix is posted a few threads down from this one. In fact there’s been a couple posted in the last couple days alone. I would not run this on my vehicles or equipment….

 

[ZeeOSix]

XP has higher filtration and longevity due to different filter media than the std.

If you mean the XP is more efficient by the term "higher filtration", then it's not. The regular Wix is more efficient than the XP.

 

[ZeeOSix]

i trust M+H to put Wix back where they were.
You really would think it would have happened by now though. Lol

Think it's the other way around. M+H put Wix below where they use to be. Probably why NAPA dropped Wix to make their filters and went with a PGI product instead.

 

[ripcord]

Ad copy. Learn to recognize it and free yourself from the BS, lol.

 

[BHopkins]

Think it's the other way around. M+H put Wix below where they use to be. Probably why NAPA dropped Wix to make their filters and went with a PGI product instead.

You really believe that NAPA is idealistic enough that they dropped Wix because of changes to the filter internals?

I guess I'm too much of a skeptic. I suspect that NAPA was able to negotiate better profit margins by going with PGI filters carrying the NAPA brand. I'm not trying to slight NAPA. But it's just business these days. Higher earnings for the stock holders is the bottom line.

 

[ripcord]

You really believe that NAPA is idealistic enough that they dropped Wix because of changes to the filter internals?

I guess I'm too much of a skeptic. I suspect that NAPA was able to negotiate better profit margins by going with PGI filters carrying the NAPA brand. I'm not trying to slight NAPA. But it's just business these days. Higher earnings for the stock holders is the bottom line.

Why don't we have a double thumbs up?

 

[ZeeOSix]

You really believe that NAPA is idealistic enough that they dropped Wix because of changes to the filter internals?

Yes, I believe it had a factor. Maybe NAPA doesn't want bad press on their products dragging down sales. If they make more profit too, then it's a win-win.

 

[Glenda W.]

Mobil 1 dropped M+H as well. Seems things are catching up to them.

 

[ZeeOSix]

Mobil 1 dropped M+H as well. Seems things are catching up to them.

Yeah, seems to be a theme going on there.

 

[fantastic]

Yes, many of us have stumbled upon that link. Fun to read but WIX is the worst part of M+H. They continue to cheapen their XP line too just like what happened to the Ultra's. M+H philosophy has been capacity as an important element to their production.

 

[Slick3914]

This Wix is posted a few threads down from this one. In fact there’s been a couple posted in the last couple days alone. I would not run this on my vehicles or equipment….

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That’s just absolute garbage! Sad that the Wix name is on that junk.