This guy tore apart 14 oil filters

[Ron Quixote]

These are Jeep filters, obviously, but I imagine this information is broadly useful to people deciding what oil filter to buy.

I was heartened to see my personal choice -- Fram Endurance -- comes highly recommended.

And praise the Lord, it's not a video!

https://www.jlwranglerforums.com/forum/threads/review-of-fourteen-2-0t-oil-filters.143828/

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[embedded rock]

In that list of filters, five are rated to run for 20k+ miles. One has the capability of capturing 20micron particles while others are not able. My understanding has been that those long-mileage filters are designed to capture everything thereby preventing the filter from becoming clogged before the mileage rating. The second filter (Fram) in that list is rated to 20micron.

For reference there are 25,400 microns per inch, so there really isn't much difference between a 20 and 40 micron filters.

 

[MasterCylinder]

These are Jeep filters, obviously, but I imagine this information is broadly useful to people deciding what oil filter to buy.

I was heartened to see my personal choice -- Fram Endurance -- comes highly recommended.

And praise the Lord, it's not a video!

https://www.jlwranglerforums.com/forum/threads/review-of-fourteen-2-0t-oil-filters.143828/

Personally I always cut open my first oil change filter on New or Used vehicle and inspect with magnifier lens for any unwanted particles trapped in the element, at intervals down the road also. For us as end consumers what needs to be realized is, once thought of as American made is sadly gone. Small items like oil filters have been passed off to over seas production for the most part as a cost cutting and competition measure, so it's a gamble whether the one you grab is made here there or any where else, even if a plant exist in USA. Not to mention the copy cat market of these small items even spark plugs, brake pads, etc.... So I just stick with the ol motorcraft for my Fords.

 

[MasterCylinder]

In that list of filters, five are rated to run for 20k+ miles. One has the capability of capturing 20micron particles while others are not able. My understanding has been that those long-mileage filters are designed to capture everything thereby preventing the filter from becoming clogged before the mileage rating. The second filter (Fram) in that list is rated to 20micron.

For reference there are 25,400 microns per inch, so there really isn't much difference between a 20 and 40 micron filters.

Who would've thunk it, Engine wear begins at an estimated 10-30 microns, not to mention the filters bypass valve usually comes into play about 20-30% of the time to. I can actually put my hand on a newly changed oil filter and feel the bypass valve operate on occasion, normally in bottom of filter, sometimes several times before oil warms up. Yet we can still get over 100,000 miles + with proper maintenance, not the recommended factory levels of maintenance. Ranger On!

 

[Morningpride]

You guys do understand that every time you start your truck cold, the oil bypasses the filter Until it gets warm right?

 

[superj]

I remember when some engines had a mesh screen, like the screen door, for a filter. You could pour sand through it and it only caught the big pieces. Funny how those engines still ran.

Mine leaked enough oil that i never changed the oil or filter. It also was automatically reapplying rust protection.


Ha ha ha, the good ol days. This was around 1996 with my 71 karmann ghia

 

[Ron Quixote]

I'm sure y'all are right. Filters don't really do much. Who wants to bolt a blanking plate up there instead? That would save a few bucks every year for sure.

 

[MasterCylinder]

I remember when some engines had a mesh screen, like the screen door, for a filter. You could pour sand through it and it only caught the big pieces. Funny how those engines still ran.

Mine leaked enough oil that i never changed the oil or filter. It also was automatically reapplying rust protection.


Ha ha ha, the good ol days. This was around 1996 with my 71 karmann ghia

Hahaha yep! I had the VW that had the screen too. My older brother had an oil bypass motor in his car, Lol. Also had an 56 chevy straight six bought from my grandfather he bought new. It never had an oil filter on it and when I sold it, had 257000+ miles on it still going, oil was changed every 3000 miles from new with straight 30w just like he did. I figured why change what was working!

 

[embedded rock]

You guys do understand that every time you start your truck cold, the oil bypasses the filter Until it gets warm right?

I'd like to read about some testing that proves this. Mind to reveal your source?

 

[Morningpride]

I'd like to read about some testing that proves this. Mind to reveal your source?

Here’s a simple explanation. I’m sure you could find more by doing a search.

https://bobistheoilguy.com/forums/threads/exactly-how-does-a-bypass-valve-work.23682/

 

[embedded rock]

Here’s a simple explanation. I’m sure you could find more by doing a search.

https://bobistheoilguy.com/forums/threads/exactly-how-does-a-bypass-valve-work.23682/

No testing to support that claim there.

 

[Meatbag]

"high mileage" filters are one of the biggest marketing scams. No one should be running oil and their filters longer than 5000 miles. If you're going 10k+ miles on the same oil and filter you're doing more harm than good and rollin' the dice.

 

[bigb]

My understanding of the bypass is that is opens often. It needs to in order for oil pressure to be maintained. It opens on cold starts because the oil is thick and the pressure pushes past the bypass, it opens when you goose the throttle. Contrary to popular belief that it is only there in case the filter clogs. Have read about this on more than one oil site.

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