Fram FE7317 Endurance - new batch April 2025

[GRUMPYDUDE2]

I rather have e core over louvers any day

Yes. Agreed.

 

[jlmilli]

I have the amsoil version of this on my Armada now. E-core and all. I'm guessing less than 2k before it comes off. Will C&P with flashlight test.

 

[Hohn]

Is there an engineering reason why the plastic/ecore is not superior to a metal core with holes/louvers? It would seem to me that in addition to likely being cheaper to produce and equally structurally sound, it eliminates the potential for closed louvers.

Plastic cores are generally cleaner and less likely generate debris. They are easier to make very clean and maintain high cleanliness. When done well, a glass filled plastic center core is superior to a metal core IME.

 

[Gravity_Wolves]

Is there an engineering reason why the plastic/ecore is not superior to a metal core with holes/louvers? It would seem to me that in addition to likely being cheaper to produce and equally structurally sound, it eliminates the potential for closed louvers.

Ecore has a bigger flow area

 

[Hohn]

Ecore has a bigger flow area

By several times. It also tends to let the media load more evenly.


I really like what I’m seeing here; I’ll need to buy a couple of these.

 

[ZeeOSix]

An Ecore center tube doesn't matter enough in terms of dP advantage or "flow distribution". Filters work just fine with holes in the center tube, even if those holes visually "look small and few" like the ones Fram used before going with louvers. I've ran the dP vs flow model, and the dP is super small with hot oil at 10 GPM - around 0.15 PSI. The total hole flow area was still 11% of the center tube surface area. An Ecore center tube would help reduce dP more at very cold oil startup however, but it's not going to make or break the functionality of the filter. The filter would still most likely go in to bypass at very cold start-up conditions regardless of the center tube because the media is the biggest flow restriction in an oil filter.

 

[chuck wood]

I've got 2,000 miles on one of these now on an Acura MDX hybrid 3.0L and it hasn't blown up yet. The inlet hole base-plate and the e-core look exactly like the Honda size K&N (white) Performance filter I got from Autozone 2 years ago on a Mobil 1 oil + filter special.