Higher flow rate than the media efficiency? An Ecore center tube will have a hair less dP vs flow, but it's not going to make any real difference in "flow". The only center tubes that there should be concern about in terms of "flow" (meaning dP vs flow rate performance) are center tubes with really choked down louvers. Even the Fram metal center tubes with a bunch of 1/8 inch holes in it has a very small dP vs flow curve.
What’s the consensus on filters with a plastic core?
- Thread starter Elkins45
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I'll continue to buy filters with round holes in a metal center core if they're available.
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let me ask you since you mention louvers.. i for awhile now been hesitant to run a filter with louvers. should i have fear in them being more restrictive over holes? i noticed the OE Gonher made Nissan filters have louvers and almost every aftermarket filter i pickup has holes. does the aftermarket know something better over Nissan designed filter. there times i read about folks having start up noises and oil pressure related adbv issues with the OE filters. what gives?
Choked down vs open louver examples photos have been shown in many threads. If you look down the center tube and they look like tiny slits then they are pretty choked down. Everyone needs to become a louver reading expert to make a good decision to use a filter with louvers or not. That's one benefit (among others) to go with a PGI built or similar built filter these days with a center tube with holes, or an Ecore center tube. Don't have to be a louver reader and judge with every filter you pick up.
If they look like this ... don't use it.
This is what they should look like.
These two center tube shots were actually on the same brand and model filter, so this goes to show how inconsistent louvers can be.
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The center core is most likely ABS or nylon
Ecore tube is fine. The bigger issue now imo, how the bypass piece seal area is made/formed. Flashlight testing has shown that. Lastly while ecore fine, I' don't believe any 'significant' difference in flow between metal tube with holes or properly formed louvers.
Even many spin on metal can filter have the plastic cage center core. AC, Some Frams. Nothing wrong with the cage. Higher flow compared to louvers, even compared to holes.
My 2¢
My 2¢
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Premium Guard fanboy here. That's all I get now.
Not really. The one on my 08 Passat had no center core. The center core was built into the oil filter cap.
Toyota cartridge filters have no center core either. The center core is in the oil filter cap.
VAG still to this day, with their ea888 engines, still use oil filters without a center core.
True. But those built-in center cores are usually also plastic, as they were on my old Sedona.
I think it's accurate to say many cartridge filters use nylon cages, i.e., those without the support cage/tube built into the housing/cap. The use of the term "nylon" coming from ACDelco description of their ecore filters, linked.
https://gmserviceinsights.com/new-acdelco-oil-filters-deliver-enhanced-performance/
https://gmserviceinsights.com/new-acdelco-oil-filters-deliver-enhanced-performance/
^^^This^^^
wemay
Site Donor 2023
No issues at all.
Pretty sure the Nylon plastic cages are a PA66 derived material that is used universally is oil fluid type applications.
They are fine service able filters. Used thousands of them that were CHAMP LABS for 15 years with zero issues
2015 Purolator filter. Why risk it if you don't have to?
So has MB.
