Oil Filter Comparison Page

[benjy_26]

Hello all. I recently came across a page that compares oil filters in relation to the Wix/NAPA units. The page IS a bit biased towards the Wix made filters, probably because that's what they sell. The cool thing about the page, though, is that they took the time to take apart the filters and show the construction of each. Here's the link:

http://www.fleetfilter.com/comparison-purolator-filter.html

[nitroxsteve]

I wouldn't put too much faith it comparisons from a manufacture who is trying to show its product in the best light. The first thing I noticed is that they say the purolator is over 3/4" shorter than the napa but in the side by side photo they look even to me. Also when showing the filter material unrolled it looks like the purolator has taller pleats so it will be shorter but may have the same or possibly more material. IMG_06511.jpgThe proper way to compare would be to stretch out the material and measure the surface area. That being said I think both products are good quality.

 

Edit: I see they do list the paper surface area it just looks misleading in the picture. I also can't tell if they are actually saying one is any better than the other. I should have looked at this on a bigger screen than my phone before commenting . Lol

[benjy_26]

I think that they DO imply that they want you to buy a Wix from then, but I think it gives a decent break down of the materials used and construction of some of the moat common filters available.

[Eagle]

So youse wanna know about erl filters, eh?

 

Ask and ye shall receive: http://minimopar.net/oilfilters/index.html

[benjy_26]

Thanks Eagle! Very interesting reading. :)

[jimoshel]

When I was a young un I remember using oil filters that used a roll of toilet paper in them. They seemed to work OK but I wonder how they would be in modern engines.

[Eagle]

When I was a young un I remember using oil filters that used a roll of toilet paper in them. They seemed to work OK but I wonder how they would be in modern engines.

Very messy.

 

Those were partial flow filters, IIRC. That last partial flow filter I saw (not the toilet paper type) was in my father's 1962 Rambler. They didn't run the entire oil circulation through the filter, only a bypass circuit. So only some of the oil was filtered as it flowed through the engine, and as the filter became obstructed by gunk less and less oil went through the filter -- at the time when the oil was dirty and it was most important to be filtering it.

 

Dunno whoever thought that was a good idea, but he should have been shot at dawn.

[daking]

kinda related, 

 

how does everyone have the filter mounted?  

 

On mine, the filter is angled up, so that you can't pre fill it with oil during an oil change. 
 

 

I usually add oil to an oil filter before installing, but on this 4.0, that's not possible, is it?  

[benjy_26]

On my 2.5 MJ it's angled down. On my 4.0 ZJ it's pretty much parallel to the ground with the top of it pointing straight back.

[Motorcharge]

Try and reach the filter from below and you'll know why it's angled up.

 

Wix, Purolator, Napa Gold are all fine. Just stay away from Fram and any other filter with the anti-drain back valves on them. 4.0s don't like em.

[benjy_26]

I don't know about the Purolators, but the Wix cans I use have some pretty beefy anti drainback valves on them.

[nitroxsteve]

Try and reach the filter from below and you'll know why it's angled up.

 

Wix, Purolator, Napa Gold are all fine. Just stay away from Fram and any other filter with the anti-drain back valves on them. 4.0s don't like em.

why don't 4.0's like them?

[benjy_26]

I don't think ANY engine likes Fram's OCD (Orangr Can of Death). They've been known to fall apart and clog up oil passages, causing catastrophic failures.

[Incommando]

I have seen Frams split.

 

Excuse my ignorance on the subject but I thought that we wanted filter that did not allow drain back on our upside down filter as otherwise the filter would be dry and have to fill up/saturate before flowing oil on every start up?

[nitroxsteve]

I don't think ANY engine likes Fram's OCD (Orangr Can of Death). They've been known to fall apart and clog up oil passages, causing catastrophic failures.

I know about frams reputation but not about the anti drain back. Is there something wrong with that?

[Eagle]

I have seen Frams split.

 

Excuse my ignorance on the subject but I thought that we wanted filter that did not allow drain back on our upside down filter as otherwise the filter would be dry and have to fill up/saturate before flowing oil on every start up?

You are correct. We DO want a good anti-drainback valve, and the good filters mentioned all have one.

[Eagle]

Just stay away from Fram and any other filter with the anti-drain back valves on them. 4.0s don't like em.

??? Please cite a source for this, because it is contrary to everything I have ever heard about oil filters and the Jeep engines. In fact, the Wix, Purolator, Mobil-1, and NAPA Gold filters all have reliable anti-drainback valves.

[benjy_26]

 

I don't think ANY engine likes Fram's OCD (Orangr Can of Death). They've been known to fall apart and clog up oil passages, causing catastrophic failures.

I know about frams reputation but not about the anti drain back. Is there something wrong with that?

From what I've been told, you WANT a good anti drain back valve. One of the flaws in the Fram design is their crappy valve design.

[Motorcharge]

Swype on my phone and I didn't proofread. That was supposed to be without.

[mvusse]

Try and reach the filter from below and you'll know why it's angled up.

 

Wix, Purolator, Napa Gold are all fine.

 

Napa filters are made by Wix, Bosch filters (Bosch used to own 50% of Purolater a few years back) are Purolater Pur-One. All of these are good.