My 300,000 mile 1MZ-FE and 160,000 mile 1MZ-FE running Toyota filters agrees.
I will stick to the Toyota filters on it.
Toyota oil filter light leak
- Thread starter GI_GRIFF
- Start date
I will stick to the Toyota filters on it.
Where did that photo come from? If it's from Ascent's testing then I'd say these leaf springs were not leakers, and hence those filters came in efficient as advertised in the test. Both leaf springs for the two left filters (Ultra and RP) look pretty smooth and ruffle free to me - see zoom-ins below.But RP is a clone of Fram Endurance isn’t it? Are you then assuming the RP tested in both Ascent and its ISO had no ruffles or leaks?? In the top pic there doesn’t “appear” to be ruffles…. But if you zoom on the bottom pic, there still appears to be slits below the leaf springs on both filters in some spots.
Endurance vs RP
View attachment 293212
View attachment 293213
View attachment 293214
The fact is, if there is any level of leakage at the leaf spring it's going to decrease the efficiency accordingly. Nothing is ever going to change that fact.
Fram the Ultra. Keep in mind that the Ultra Ascent tested was an OG Ultra with the fiber leaf spring gasket, so pretty much guarantee it was not leaking at all.
The Royal Purple leaf spring looks pretty smooth to me, so it came in pretty high efficiency too. The more warped and ruffled a leaf spring is, the more it's going to leak and the more it's going to decrease the efficiency. That's how it works, and always will work since physics doesn't change.
Yes, I pointed out both looked smooth nonetheless, we have what appears to be gaps below both Fram and RP in these close up shots
RP top Fram bottom
That’s Fram Endurance in the photos
And this is at the heart of this controversy>>>
“ Decreased Efficiency “ notwithstanding…..,
Do you accept the Fram Endurance ISO as stated as well as Its RP clone AND the likely possibility that BOTH had imperfect leaf spring contact as tested?
Last edited:
Considering almost every example of these filters shown was "leaking" with the flashlight test it is very likely that they were also "leaking" when tested.
So 99%+ at 20 Microns with "leaking" included.
Bingo
Nobody can make any conclusions on those photos - "seeing" something that most likely doesn't exist. Need to do a light test to check for leak gaps. Grasping for "hope" that they have big leak gaps and still tested at 99% @ 20u ... which would be impossible unless the leak was below 1%, even less since the media has to let some through too, as I highly doubt the media itself is 100% @ 20u. So based on the actual leaf spring, the RP in Ascents test most likely wasn't much if any kind of leaker.Yes, I pointed out both looked smooth nonetheless, we have what appears to be gaps below both Fram and RP in these close up shots
RP top Fram bottom
View attachment 293228
View attachment 293229
Last edited:
Then where did that photo come from, because Ascent did not test an Endurance. Nerveless, as said both of those leaf springs look smooth, so not a leaker like a big ol' ruffeled leaf spring would be.
No ... like I've said many times, if a filter with no internal leakage tested at 100% @ 20u, then there's no way it can ISO 4548-12 test at 99% @ 20u if the leak is bigger than 1%. If it's not leaking any at the leaf spring, and it ISO tested at 99% @ 20u, then that 1% loss in efficiency was simply from the media letting 1% of the debris pass through.
Last edited:
Only way a filter could come in at 99% @ 20u is if the total amount of a particulate that got on the clean side of the filter was what went though the media combined with what got through from a leak path - the total amount of particles that got through, regardless of how. So based on the size of the leak gaps seen here, there is no way that those filters could have ISO tested at 99% @ 20u with a 10% to 15% leak going past the media - not even with a leak more than 1%.
Those look smooth to me and not leakers.
The ruffled leakers are obvious.
This Endurance with a particle count of 15 most likely is a leaker.
The ruffled leakers are obvious.
This Endurance with a particle count of 15 most likely is a leaker.
Last edited:
