One reason Toyota oil filters irritate me. I will post this flashlight test, several filter companies use this style of bypass valve built into the leaf spring, It makes no sense to me that oil filter companies keep using this design, knowing unfiltered oil will go through, even with a brand new unclogged oil filter.
Toyota oil filter light leak
- Thread starter GI_GRIFF
- Start date
Well well .., Fram isn’t alone lol
OEM filter with the most trusted car manufacturer on the planet …..
And you don’t think Toyota isn’t aware?
Really???
Does it matter?
The little oil that does get past is ..Drum Roll…. RECIRCULATED immediately
.
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Bad efficiency is bad efficiency, regardless of the cause. The "justification" ... it will be caught on some other pass, and engines never produce debris. We need some filters with torn media so some can try to justify that too. 
AH…..Bad efficiency is bad efficiency, regardless of the cause. The "justification" ... it will be caught on some other pass, and engines never produce debris. We need some filters with torn media so some can try to justify that too.
But it’s not “Torn Media”, so why “go there”?
It’s not even close in comparison.
Show me how ACTUAL REAL LIFE filter performance is compromised by these “gaps”.
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Efficiency numbers often source from 4548.12, but that test isn’t real life either. One reason is 4548.12 tests small rocks that don’t react with each other. (John Duchowski, HYDAC).
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You have a hard time grasping analogies it seems. A big gap at the leaf spring and a small tear in the media would be about the same impact on reducing efficient. Would you keep using oil filters that always had a small tear in the media that allowed 15% of the flow go continuously past the media? I don't think you will ever understand this based on the repeated "justifications" for leaking oil filters you keep coming up with, lol.
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This is the filter design I like. It still only filters out the bird nests and playground pebbles, but it matches the Toyota OEM on efficiency and flow rate, on purpose. Baldwin's bypass doesn't open until the filter media is plugging. Other manufacturers make this style besides Baldwin, but I just don't have a list. It is rated at 23 nominal, 45 absolute, matching Toyota's filter.
Meets the Toyota efficiency without any internal leakage.
They know how to form louvers too.
That’s only if the hole in the media remains static. Since media is subject to further degradation once compromised, it’s far more likely to progress.
Think of a pair of torn jeans at the knees.
This gap is not going to progress…” it is what it is” ….and it’s minute. You need a flashlight to see it!! It’s not going to expand over time either.
You say its 15% leakage ….no proof… nada zip. Even so….you continue to ignore the fact it’s recirculating back into a highly effective filter.
But we have a “LEAK” ….
Yes… of course …. Show me how it matters …Real tests and data
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A leak is a leak ... period. The 15% leak was based on an actual gap measurement. Think you were trolling in that big thread too. Let's see your calculations, and let's see your PC model of how a leak impacts the efficiency. So would you use an oil filter with a media tear that was leaking 15% of the flow through it? Seems like you would, right.That’s only if the hole in the media remains static. Since media is subject to further degradation once compromised, it’s far more likely to progress.
Think of a pair of torn jeans at the knees.
This gap is not going to progress…” it is what it is” ….and it’s minute. You need a flashlight to see it!! It’s not going to expand over time either.
You say its 15% leakage ….no proof… nada zip. Even so….you continue to ignore the fact it’s recirculating back into a highly effective filter.
But we have a “LEAK” ….
Yes… of course …. Show me how it matters …Real tests and data
Keep on justifying the use of leaking filters.
I’m not disputing a given gap size in the filter media equates to the gap on the leaf spring. It’s the propensity of a media tear to expand vs a metal on metal.
Secondly, I don’t accept your 15% leakage as a “given” it’s speculative.
Third. and most importantly, you continue ignore the compensatory effect of continuous recirculation and filtration of the fraction that is bypassed.
You’re entire argument is… and continues to remain… pure speculation.
Until you can demonstrate otherwise, you have a vacuous case. Empty …no proof the Fram Endurance doesn’t perform as advertised.
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You guys sure like to argue! It really is not a big deal, in the 1950's lots of car makers didn't even run oil filters on their engines. Who cares if they leak. As I said, Toyota prefers loose, leaky engine oil filters, they last sometimes 300,000 or more miles like that sometimes.
Yeah
I admit it’s turning into a dog fight of epic proportions!
I’m going to let my opponent have the last say….lest we go on unto eternity!
I’m done …until we see more than a “flashlight GAP”
So…carry on
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Yep he rants again
I’ll keep quiet …no need to go down anymore rabbit holes
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A leak is a leak ... and based on some of the gaps seen there are many leaking in the 10% to 15% range.
It's based on a pretty good calculation method. Let's see how you would analyze it for comparison. You have zero idea even how to approach such an analysis.
Continued justifying leaky filters with that mantra "it's going to recirculate" excuse. What's your big fascination with leaky oil filters?. You won't answer these questions because maybe you don't really know ... maybe it's the name or the color of the can that has you so dedicated to a leak defect? You think it's "speculation" that a big internal leak will decrease the filter efficiency? Sounds like you don't even believe it can reduce the efficiency.
You have no understanding of the analysis, so what's your "proof" that a leaky Endurance is going to ISO 4548-12 test to 99% @ 20u? Let me guess ... everything you're locked on to is based on the BR particle count test ranking, which shows a known low efficiency Boss rank right up with ruffled leaf spring filters, right? The PC model says if it's leaking 5% or more it's not going to anywhere near making 99% efficiency. Where's your proof that the Endurance would rate the same in the ISO efficiency test as it doesn't in the BR test?
Don't worry ... there will be plenty more to view, and then you'll rise from dead horse hibernation like usual and continue to justifying leaky leaf springs.
You were a member here when the Purolators were tearing media left and right ... so were you also justifying torn media back then?
