Fleetguard LF9620 C&P

Joined
Dec 15, 2010
Messages
1,524
Location
San Antonio,TX & Leadville, CO
Filter looks great to me.

Came off my Detroit 12.7L 60 series after 2 yrs & 10K miles with Amsoil AME 15w40. There are dual oil filters on this engine.

I wish Fleetguard made these dual (full flow & bypass) section Stratapore Venturi filters for everything.

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man that’s quite the filter. thanks for the photos! i wish i could get something like this mounted on all of my vehicles, really just need a smaller thread and i’d commit to a remote mount
 
30 Micron Efficiency, TWA: 98.7 % (98.7 %)

This is off the Fleetguard website:

"Primary particle efficiency: 24.60 micron (c) @ 98.7%"

https://www.fleetguard.com/s/productDetails?propertyVal=LF9620&propertyField=home&language=en_US

I'm assuming that this rating excludes the impact of the Venturi bypass - I couldn't find any credible information on its efficiency.

I ran these in my '18 Cummins and would still run them if they made them for the passenger vehicles I now own. The build quality is/was outstanding.

 
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This is off the Fleetguard website:

"Primary particle efficiency: 24.60 micron (c) @ 98.7%"

https://www.fleetguard.com/s/productDetails?propertyVal=LF9620&propertyField=home&language=en_US

I'm assuming that this rating excludes the impact of the Venturi bypass - I couldn't find any credible information on its efficiency.

I ran these in my '18 Cummins and would still run them if they made them for the passenger vehicles I now own. The build quality is/was outstanding.
Based on the PDF link in post 8, it seems the "Primary particle efficiency" of 98.7% @ 24.6u would be for the whole filter assembly.

The specs in the PDF are also for the whole filter assembly, it's just showing two points on the efficiency curve.
 
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Based on the PDF link in post 8, it seems the "Primary particle efficiency" of 98.7% @ 24.6u would be for the whole filter assembly.

The specs in the PDF are also for the whole filter assembly, it's just showing two points on the efficiency curve.

Based on the PDF link in post 8, it seems the "Primary particle efficiency" of 98.7% @ 24.6u would be for the whole filter assembly.

The specs in the PDF are also for the whole filter assembly, it's just showing two points on the efficiency curve.

That's a reasonable surmise, but why describe it as "primary" then?

Also, since the Venturi is a "bypass", how would you adjust for the fact that it's not a full flow component (96-ish*% primary + 4% primary and secondary?)?

It would be interesting to see a UOA on this filtration system with a particle count.

* don't know what % of flow travels through the bypass on a single pass, I just threw 4% in there for an illustration
 
That's a reasonable surmise, but why describe it as "primary" then?
Their use of the word "primary" may mean the whole filter as an assembly. You'd have to call their Tech Line to find out.

Also, since the Venturi is a "bypass", how would you adjust for the fact that it's not a full flow component (96-ish*% primary + 4% primary and secondary?)?

It would be interesting to see a UOA on this filtration system with a particle count.

* don't know what % of flow travels through the bypass on a single pass, I just threw 4% in there for an illustration
That's why it makes sense for the filter efficiency to be shown as an assembly because that's the configuration it is when used on an engine. Guess they could have specifically said the regular media is xx% efficient at yy microns, and the more efficiency bypass section is xx% at yy microns, but what matters is the efficiency of the filter as constructed.
 
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