Louvers - Again, AMSOIL EaO filters

[CobraMike]

No metal waste during production with louvers - it's just bending metal. Lots of punched hole pieces to manage with holes. Also, if louvers are formed correctly, the total flow area of the center tube will be a bit more than with holes, so that helps reduce the delta-p vs flow a little bit. If louvers are not formed correctly, then the delta-p could actually be increased, and if louvers are almost closed, that could make the delta-p so high that the filter's bypass valve may open way more than it should.

Makes sense. Thanks for the explanation!

 

[Blinker]

Wow, the filter in question sure is eye opening.

 

[Adambomb7777]

I have an EAO34 I was going to use this weekend (and still going to use) and noticed it has louvers as well

 

[OVERKILL]

I have an EAO34 I was going to use this weekend (and still going to use) and noticed it has louvers as well

Just make sure they are open and you'll be fine.

 

[K-Man]

Now you've got me worried. EaO11 is the one I use on my Ranger. Bought it last year (one of two) and installed the second one a couple of months ago.

 

[OVERKILL]

Now you've got me worried. EaO11 is the one I use on my Ranger. Bought it last year (one of two) and installed the second one a couple of months ago.

Didn't check the louvers eh? LOL!

 

[PimTac]

How thin is this center core material. I’m wondering if louvers would open up more once pressure builds?

 

[That_Spine_Guy]

I have been lurking on these forums for over a year, and I have never considered inspecting my filters pre-installation for the louvers to be open or not. Now my OCD is having another thing to worry about, even though I have not used this premium brand.

 

[OVERKILL]

How thin is this center core material. I’m wondering if louvers would open up more once pressure builds?

It's not THAT thin.

 

[DuckRyder]

Got some 34s last week and they were fine.

Hope we get a report out one Overkill’s filters once they check them out.

 

[PimTac]

It's not THAT thin.

Thanks. I’ve never opened up any filter to check.

 

[wemay]

I beginning to like cartridge filters more and more.

 

[wemay]

At least with Amsoil you know you're being heard and listened to.

 

[DuckRyder]

At least with Amsoil you know you're being heard and listened to.

And you don’t have to worry if they are still there because you will get atleast one e-mail per day from them..

 

[ZeeOSix]

How thin is this center core material. I’m wondering if louvers would open up more once pressure builds?

Only when center tubes are being made of heavy tin foil.

 

[ZeeOSix]

I have an EAO34 I was going to use this weekend (and still going to use) and noticed it has louvers as well

Zoom in and photo adjustment shows they look AOK.

 

[PimTac]

Only when center tubes are being made of heavy tin foil.

I’m guessing there is a point where the metal could be thin enough to do this. It was just a thought.

 

[ZeeOSix]

I’m guessing there is a point where the metal could be thin enough to do this. It was just a thought.

No oil filter designer with any common sense would make a center tube (metal or otherwise) deform or fail under maximum anticipated delta-p, and they would put many safety factors above that.

 

[mxkx]

A pair of US-made EAO17 checking in. One appears to have more closed louvers than it has open. I have an email in to Amsoil customer support.

#1:

 

[mxkx]

#2: