Pentius PLXL 3675

[twX]

I wanted to ask everyone's opinion of the lower cost Pentius PLB7317 filters.
Do the smaller holes cause lower than average pressure?

Also, on the inlet I notice only 8 small holes (would this decrease the overall oil pressure to the engine).

The inlet holes on the PLB7317 seem to be the same size as those on the XL. They're a reasonable size.

Inlet hole restriction is mainly a concern in high flow applications, since the pressure drop across the holes will pretty much increase with the square of the flow rate. The base plate on the Pentius filter might drop 4 psi at the 16 GPM my Subaru engine flows, but that would equate to only around 1 psi at a more typical 8 GPM.

Oil filter dP will reduce oil pressure and flow when the pump is in pressure relief, like at high rpm, when pressure and flow to the bearings is most important. Most of the time an extra few psi won't matter, but if the filter clogs and drops 20 psi across the bypass valve, an extra 5 psi across the base plate could make things a lot more critical.

The Google AI engine came back with Pentius PLB's rated at 99% efficiency @ 20 microns.
Would anyone know if this efficiency rating is correct. This sounds too good to be true for such an inexpensive filter.

Whip City Wrencher has a video on Youtube comparing the XL and PLB. The microscope pictures would suggest that the PLB is nowhere close to 99% at 20 micron. The media looks really porous. I'd guess it's more like 40-50 micron. The XL media looks good, similar to other filters rated 20 to 30 micron.

 

[Bkdc]

Wow nice catch. That’s scary. At least with louvre holes, you’re not thinking about free pieces of large metal that might fly off. I think my conclusion is that synthetic blend media is better in general at filtration than fully synthetic media. It’s better to just change our oil/filter frequently than deal with extended interval media which typically allows more stuff to filter through to avoid getting clogged up quickly. And inspect every filter before installation.

 

[Hootbro]

The Google AI engine came back with Pentius PLB's rated at 99% efficiency @ 20 microns.
Would anyone know if this efficiency rating is correct. This sounds too good to be true for such an inexpensive filter.

You have to click on the links the AI references when it gives you a summary answer to see if it is even in the ball park of what you are looking for. Google AI or for that matter any of the other AI online services are still giving stabbing guesses based on data averaging and can be way off.

 

[Bill7]

The inlet holes on the PLB7317 seem to be the same size as those on the XL. They're a reasonable size.

Inlet hole restriction is mainly a concern in high flow applications, since the pressure drop across the holes will pretty much increase with the square of the flow rate. The base plate on the Pentius filter might drop 4 psi at the 16 GPM my Subaru engine flows, but that would equate to only around 1 psi at a more typical 8 GPM.

Oil filter dP will reduce oil pressure and flow when the pump is in pressure relief, like at high rpm, when pressure and flow to the bearings is most important. Most of the time an extra few psi won't matter, but if the filter clogs and drops 20 psi across the bypass valve, an extra 5 psi across the base plate could make things a lot more critical.


Whip City Wrencher has a video on Youtube comparing the XL and PLB. The microscope pictures would suggest that the PLB is nowhere close to 99% at 20 micron. The media looks really porous. I'd guess it's more like 40-50 micron. The XL media looks good, similar to other filters rated 20 to 30 micron.

Amazon has a decent sale on the

Don't worry about base plate holes. They will all flow well enough to not make any difference to the oil supply to the engine unless you're driving around at redline all the time with 20W-50 oil. The thing to worry about it using a filter with choked down louvers.

Thanks for that info. Even though as you pointed out, it really doesn't matter, it's just a comforting feeling to use a filter that has those large and numerous inlet holes like the Fram XG7317 and PH7317 filters.

One elephant in the room that maybe hasn't been mentioned is that even with the "leaks of the unfiltered oil of 10% to 15%" in the Fram filters, they still seem to have passed the ISO efficiency test for 99% @ > 20 microns. Maybe without the leaks they would filter 99% @ 10 microns, but maybe the leaks don't matter if 99% @ > 20 microns is still maintaned with the defect.

 

[ZeeOSix]

Keep in mind that the typical engine oiling system is around 15 times more flow restrictive than the typical oil filter. Compared to the oiling system, oil filters are pretty low flow restriction.

One elephant in the room that maybe hasn't been mentioned is that even with the "leaks of the unfiltered oil of 10% to 15%" in the Fram filters, they still seem to have passed the ISO efficiency test for 99% @ > 20 microns. Maybe without the leaks they would filter 99% @ 10 microns, but maybe the leaks don't matter if 99% @ > 20 microns is still maintaned with the defect.

I'd venture to say that the ISO efficiency on their website was with filters that don't leak by the leaf spring. If you understand how the ISO 4548-12 test is ran with real-time particle counters up steam and down stream (ref the big Ascent efficiency testing thread), then any kind of leakage past the media is going to clobber the ISO efficiency.

 

[Bill7]

Keep in mind that the typical engine oiling system is around 15 times more flow restrictive than the typical oil filter. Compared to the oiling system, oil filters are pretty low flow restriction.


I'd venture to say that the ISO efficiency on their website was with filters that don't leak by the leaf spring. If you understand how the ISO 4548-12 test is ran with real-time particle counters up steam and down stream (ref the big Ascent efficiency testing thread), then any kind of leakage past the media is going to clobber the ISO efficiency.

Interesting. "Clobbering the ISO efficiency", wonder what the actual efficiency is with the leak of unfiltered oil.
Wonder if it could drop to 50% @ > 20 Microns (instead of 99%)?

Also, it would be interesting to check the genuine Honda A02 blue filters made by Fram, to see if they have this defect.

 

[Hatsuwr]

Keep in mind that the typical engine oiling system is around 15 times more flow restrictive than the typical oil filter. Compared to the oiling system, oil filters are pretty low flow restriction.


I'd venture to say that the ISO efficiency on their website was with filters that don't leak by the leaf spring. If you understand how the ISO 4548-12 test is ran with real-time particle counters up steam and down stream (ref the big Ascent efficiency testing thread), then any kind of leakage past the media is going to clobber the ISO efficiency.

I thought that for efficiency testing they either use ones without a bypass, or they block off the bypass completely.

 

[Glenda W.]

Interesting. "Clobbering the ISO efficiency", wonder what the actual efficiency is with the leak of unfiltered oil.
Wonder if it could drop to 50% @ > 20 Microns (instead of 99%)?

Also, it would be interesting to check the genuine Honda A02 blue filters made by Fram, to see if they have this defect.

If one were to believe the BR particle counts the Boss(iso 99%@46) beat a Fram Ultra(iso 99%@20). Only explanation would be the Ultra was a leaker or the BR data is garbage.

 

[ZeeOSix]

Interesting. "Clobbering the ISO efficiency", wonder what the actual efficiency is with the leak of unfiltered oil.
Wonder if it could drop to 50% @ > 20 Microns (instead of 99%)?

Depends on the size of the leak.

Also, it would be interesting to check the genuine Honda A02 blue filters made by Fram, to see if they have this defect.

Believe those have fiber end caps, so they should seal well at the leaf spring to end cap.

 

[ZeeOSix]

I thought that for efficiency testing they either use ones without a bypass, or they block off the bypass completely.

Go look at the reference filters shown on their website ... they have a bypass valve. Also, the Ultra Ascent ISO efficiency tested had a leaf spring with bypass valve, but that was an OG Ultra with the fiber seal on the end cap.

 

[apollo18]

Amazon has a decent sale on the

Thanks for that info. Even though as you pointed out, it really doesn't matter, it's just a comforting feeling to use a filter that has those large and numerous inlet holes like the Fram XG7317 and PH7317 filters.

One elephant in the room that maybe hasn't been mentioned is that even with the "leaks of the unfiltered oil of 10% to 15%" in the Fram filters, they still seem to have passed the ISO efficiency test for 99% @ > 20 microns. Maybe without the leaks they would filter 99% @ 10 microns, but maybe the leaks don't matter if 99% @ > 20 microns is still maintaned with the defect.

could we assume that they only do the tests on 'perfect' well built test models? such as ones that didn't leak

 

[apollo18]

Here is the pic

View attachment 242776

i hope this was a one and done, cuz i would hate to inspect my filter and not see this and ruin the engine

 

[Hootbro]

could we assume that they only do the tests on 'perfect' well built test models? such as ones that didn't leak

Not saying stuff like this does not happen, but a company of that kind of stature in the filtration business has a lot to lose if caught gaming testing and test results.

 

[Gasbuggy]

Should let the company know rather than return it and have it end up back on the shelf