Fram Ultra Efficiency @ 10 Microns

[Mewbs]

Are fram ultra synthetic filters still 99% for 20mu and 50% for 10mu?
When I googled it this post seems to be the latest update and a lots changed since 2020.
I can't get an fram synthetic endurance unless I order it, but I can get an ultra and figure that good enough.

The old pink media if you can find them, its better than that, for a full flow filter its almost as good as it gets before getting into bypass filtration territory. The new gen cheapened media ones we really don't know other than some marginal improvement numbers they claimed which happens to contradict Ascent's testing data. The best you're gonna get from Fram is the Endurance which puts it in the same league as the Royal Purple based on the chart below.

From former Fram rep:
https://bobistheoilguy.com/forums/t...on-soot-particles-how-big.219563/post-3412261

Third party testing appears to line up towards that claim seeing how it tops the charts from an independent filtration testing lab.

I will get a video out with more details, but at the moment I cannot. I hope you all enjoy this summery of your favorite filters! You all have waited long enough and I appreciate you patients!

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[oil pan 4]

The old pink media if you can find them, its better than that, for a full flow filter its almost as good as it gets before getting into bypass filtration territory. The new gen cheapened media ones we really don't know other than some marginal improvement numbers they claimed which happens to contradict Ascent's testing data. The best you're gonna get from Fram is the Endurance which puts it in the same league as the Royal Purple based on the chart below.

From former Fram rep:
https://bobistheoilguy.com/forums/t...on-soot-particles-how-big.219563/post-3412261

Third party testing appears to line up towards that claim seeing how it tops the charts from an independent filtration testing lab.

Looks like they could be doing quite a bit better than 50% at 10mu.

 

[RagnarokCamaro]

80 microns = .0032" (width of a human hair)
70 microns = .0028"
60 microns = .0024"
50 microns = .0020"
40 microns = .0016"
30 microns = .0012"
20 microns = .0008"
15 microns = .0006"
10 microns = .0004"
5 microns = .0002"

For whatever it's worth, also keeping in mind what your engine's bearing clearances are.

 

[ZeeOSix]

^^^ And many wear studies show that it's the debris that is 20u and smaller that causes the most wear.

 

[oil pan 4]

80 microns = .0032" (width of a human hair)
70 microns = .0028"
60 microns = .0024"
50 microns = .0020"
40 microns = .0016"
30 microns = .0012"
20 microns = .0008"
15 microns = .0006"
10 microns = .0004"
5 microns = .0002"

For whatever it's worth, also keeping in mind what your engine's bearing clearances are.

Rings and bore wear out first. The clearance between rings and bore is less than 1mu.

 

[oil pan 4]

^^^ And many wear studies show that it's the debris that is 20u and smaller that causes the most wear.

Yeah the idea is catch those 20 to 40mu particles before they go through the engine and assuming they're silica they could go into the bearings or cam/lifter interference and shatter into dozens or even hundreds of smaller bits too small for the filter to catch.

 

[ZeeOSix]

Yeah the idea is catch those 20 to 40mu particles before they go through the engine and assuming they're silica they could go into the bearings or cam/lifter interference and shatter into dozens or even hundreds of smaller bits too small for the filter to catch.

That too ... but filtering out as much debris below 20u is also important. A filter that's rated at 99% @ 20u is going to catch a lot more particles below 20u than a filter rated at 50% @ 20u.

 

[kschachn]

^^^ And many wear studies show that it's the debris that is 20u and smaller that causes the most wear.

Correct.