Toyota oil filters
- Thread starter dbvettez061
- Start date
I'll take flow over efficiency. Doin 3k OCI's anyway. Stickin with OEM filters.
Are there any filters that have an issue with flow?
Have no idea. Just an assumption.
Okay, defective filters.For example:
We know what the data that's available shows they aren't. If they were such good efficiency then Toyota would probably publish it. Only OEM I've ever seen publish a filter efficiency is Motorcraft. But of course there are those two Toyotas that went 1M miles, so they must be "good enough". 
Yeah, different subject and context.
If it's not very efficient at particles >14u then it's going to be even worse below 14u.
PC tests that show more >14 um particles than the competition = The new ISO efficiency test results.
That being said OEM's do tend to prefer holding capacity.
When "two or three times better" means only 3 or 4 PSI difference in dP at 10 GPM of flow with hot oil, then it doesn't really matter on an engine oiling system force fed by a PD oil pump. That's the part most people don't realize. At a flow rate of 4-5 GPM (like seen in normal lower RPM driving conditions) the total low to high difference in dP between them is only around 1.5 PSI of dP. None of the difference in dP between those filters is going to actually matter.
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High holding capacity + low efficiency = lots of debris continuously shedding off the filter. Not something I really want going on.PC tests that show more >14 um particles than the competition = The new ISO efficiency test results.
That being said OEM's do tend to prefer holding capacity.
Positive displacement pump...........flow means zero (assuming there isn't a defect in the filter.)
I'm still baffled as to how so few, on an oil forum no less, don't understand the role of a positive displacement oil pump in an automobile.
You know what they say about assumptions......
The fact that you even typed that told us you had no idea. You didn't need to confirm it.
Funning aside, read about oil pumps in a car, specifically positive displacement ones. Lots of misconceptions here....
Just for context you replied about the particle count test on the Toyota stating the filter being "less efficient" than its competition. That link also shows the Purolator One being more efficient than the Ultra by that metric & you know that One's were often cited as not as efficient as an Ultra. Better go start editing those old Purolator posts since PC >14 um test linked is a legit efficiency tests now. LOL j/k
It's been discussed many times why those filters that BR tested with possible leaky leaf springs might came in where they did, let alone the accuracy and repeatably of the tests. If you think the BR efficiency ranking tests are "legit efficiency tests now" and are better than an internationally used (since 1999) official ISO 4548-12 test, then I can't help ya.Just for context you replied about the particle count test on the Toyota stating the filter being "less efficient" than its competition. That link also shows the Purolator One being more efficient than the Ultra by that metric & you know that One's were often cited as not as efficient as an Ultra. Better go start editing those old Purolator posts since PC >14 um test linked is a legit efficiency tests now. LOL j/k
Yes, ISO 12 is the correct efficiency metric. I just think it's funny how some here ask "Which filter is best" etc with one of the main metrics of a filter normally missing or unknown (efficiency). I've mentioned several times here that BR is fun YT entertainment. I do hope one day they will reach a point of legit testing. That would make for an exciting day for us right?It's been discussed many times why those filters that BR tested with possible leaky leaf springs might came in where they did, let alone the accuracy and repeatably of the tests. If you think the BR efficiency ranking tests are "legit efficiency tests now" and are better than an internationally used (since 1999) official ISO 4548-12 test, then I can't help ya.
A lot of people don't even understand that an oil filter (any filter really) has an efficiency vs particle size performance curve, like seen in the graphs in the Ascent ISO testing thread. The level of oil filter understanding covers a large spectrum on every chat board or on YT, etc talking about oil filters. So it's no surprise that some people don't really address efficiency when asking what the "best" oil filter is.
When they can add expensive real-time calibrated particle counters up stream and down stream of the filter under test.I've mentioned several times here that BR is fun YT entertainment. I do hope one day they will reach a point of legit testing. That would make for an exciting day for us right?
I do think their dP vs flow tests are pretty good, but on the fence on the efficiency ranking tests. Of course, if there are flaws in the filters under test or inconsistancies in the test methology (including the PCs done by Blackstone), that can skew the results compared to the ISO 4548-12 efficiency ranking.
Tan a YZZD1 Toyota filter on my dodge truck. No issues, held up fine. It’s in cut and post section.
