Fram Endurance Flashlight Test in canister

I made the point to mention the single pass efficiency is what I wanted to pair while using their Signature Series oil; which I just recently began using again. And the point of paying extra for a premium high efficiency filter was meant to pair with such for the purpose of removing contaminants as reliably and efficiently as possible; thus the concern. I appreciated Pete for listening and trying to follow the reasoning. A+ on the effort and presence on his end. He noted that they were getting several messages of this nature and it wasn’t just me reaching out.

@Pablo is correct that it needs to reach the actual manufacturer’s ears and eyes.
 
My guess is some people at Champion Labs already know about this issue.
If there is any level of QA QC one would think so. Doing something about it is another matter. Maybe if Fram and Amsoil say something, and users begin asking and changing their purchases, money will eventually talk.
 
I wouldn’t over analyze the construction of this filter for normal non extended use.

This is a quality filter.
 
Would it be reasonable to assume that oil will take the path of least resistance (ie the leaking bypass spring)? Purchasing a high efficiency filter only to accept a potential bypass leak seems counterproductive. Regardless, this appears to be a manufacturing or design defect and we as consumers should not accept defective products. The manufacturer should improve their process to eliminate this issue that did not exist before.
 
Would it be reasonable to assume that oil will take the path of least resistance (ie the leaking bypass spring)? Purchasing a high efficiency filter only to accept a potential bypass leak seems counterproductive. Regardless, this appears to be a manufacturing or design defect and we as consumers should not accept defective products. The manufacturer should improve their process to eliminate this issue that did not exist before.
Yes, with or without a soft seal - the metal surfaces need to be smooth and precise - not like a Ruffles potato chip …
 
Would it be reasonable to assume that oil will take the path of least resistance (ie the leaking bypass spring)?
Liquid flow through any path depends on many factors. The path with the least resistance in a multiple flow path senario gets the majority of the flow. The estimated flow through a known sized leak gap has been calculated earlier in this thread, and it's anywhere around 10% to 16% of the flow going through the media. In a case like that, it's a parallel flow situation, where both flow paths have the same dP across them.
 
Now the newest PF63 is not a positive end cap seal either …

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Liquid flow through any path depends on many factors. The path with the least resistance in a multiple flow path senario gets the majority of the flow. The estimated flow through a known sized leak gap has been calculated earlier in this thread, and it's anywhere around 10% to 16% of the flow going through the media. In a case like that, it's a parallel flow situation, where both flow paths have the same dP across them.
So we continue obsess and speculate on the bypass leakage. 10% bypass gets through only to be filtered on the next pass. I’ll take that “flaw” if it’s ultimately flowing through a filter that’s 99% above 20 microns on each pass . You can keep your 100% filtered at a lower threshold.
Where’s that dead horse I can beat for the umpteenth time?
 
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So we continue obsess and speculate on the bypass leakage. 10% bypass gets through only to be filtered on the next pass. I’ll take that “flaw” if it’s ultimately flowing through a filter that’s 99% above 20 microns on each pass . You can keep your 100% filtered at a lower threshold.
Where’s that dead horse I can beat for the umpteenth time?
LoL, given the choice, I want a filter without a continuous leak, even it's 10% of the total flow. If you ever get a filter with torn media which lets unfiltered oil through, hope you have the same nonchalant attitude about leaky filters. 🙃 😄
 
LoL, given the choice, I want a filter without a continuous leak, even it's 10% of the total flow. If you ever get a filter with torn media which lets unfiltered oil through, hope you have the same nonchalant attitude about leaky filters. 🙃 😄
It’s not about having a perfect filter, it’s about having a filter that outperforms its competitors in the real world. So far, those concerned about a bypass leak have been unable to demonstrate that the Endurance
doesn’t stand up to claims of Fram on performance.
I’m keeping my Endurance and will replace with the same going forward.
It’s the best performing filter on the market.
 
It’s not about having a perfect filter, it’s about having a filter that outperforms its competitors in the real world. So far, those concerned about a bypass leak have been unable to demonstrate that the Endurance
doesn’t stand up to claims of Fram on performance.
I’m keeping my Endurance and will replace with the same going forward.
It’s the best performing filter on the market.
As said many times, nobody has any solid proof how the leaky leaf spring effects efficiency. You just think it's still 99% @ 20u efficienct with a constant internal leak, but you have no proof, it's just something you want to believe, lol.
 
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