OIL FILTER CHOICES......what are you using
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Joined: Dec 2016
Posts: 3,539
Likes: 416
From: SoCal
Year: 1987
Model: Cherokee (XJ)
Engine: 4.0
Let's not because that's something you just made up.
And contamination does not equal obstruction. In fact Fram notes
And you still have the pressure relief bypass that will allow unfiltered oil (YES OMIGOD UNFILTERED OIL!!!) to flow in the unlikely event of total occlusion.
And contamination does not equal obstruction. In fact Fram notes
And you still have the pressure relief bypass that will allow unfiltered oil (YES OMIGOD UNFILTERED OIL!!!) to flow in the unlikely event of total occlusion.
You obviously have no idea how or why the bypass works either. It works based on the pressure difference from the inside to the outside of the filter, aka how well the filter media flows. Most open when there is around a 10 psi difference. So for a Fram, thats all the time haha. You also dont seem to know that the bypass is about a 1/4" hole. You think a 1/4" hole is enough to supply an entire engine of oil? Not even close. Most engines need a passage of at least 5/8" to be able to supply enough of a volume of oil to the rest of the engine.
Ladies and gents, this is the end of "how an oil filter works 101". Use my info, ignore it, run a good filter, use a Fram, believe what Dave says, I really dont care. To each their own!

Dave, best of luck to you and your Fram future.
CF Veteran


Joined: Jan 2017
Posts: 3,413
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From: Connecticut
Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
"What exactly IS the problem?"
I have seen syllogistic reasoning to formulate opinions, with little to no evidence to support their assertions, but hey, no prob, here's my theory, and it's a heckuva lot simpler than flow and filtration and purple filters and Wix:
- People who buy cheap Frams (and it's only XGs) are short on coin.
- People short on coin do not service their vehicle in a timely manner because they forget or can't afford it.
- You put 20,000 miles on a Fram XG and for sure there's a pile of catastrophic failures.
CF Veteran


Joined: Jan 2017
Posts: 3,413
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From: Connecticut
Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
CF Veteran
Joined: Nov 2017
Posts: 3,700
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From: Groton, MA
Year: 1995
Model: Cherokee(XJ)
Engine: I6 4.0L
For me it was wonky oil pressure after a change. Specifically it seems the relief valve wasn't opening correctly. It was suggested that the use of the Fram filter might be the problem, so I swapped it out with a WIX and the problem was corrected.
Did you watch the video Cruiser posted?
I don't doubt that there's factors in play such that it's not a clear "I used a Fram and my engine blew up". 5-speed has earned my respect over time on this forum such that I believe him when he says he has seen it multiple times. Cruiser's reputation is completely beyond reproach.
For me, I've never heard of any other brand specifically called out as a "do not use" as far as oil filters go, I've had a bad experience personally and there's evidence that the filters are demonstrably inferior. Therefore -I- will not use them. If anyone else wants to, or if you insist on doing so -- more power to you bro, like I said, it's your Jeep - do as you see fit.
Did you watch the video Cruiser posted?
I don't doubt that there's factors in play such that it's not a clear "I used a Fram and my engine blew up". 5-speed has earned my respect over time on this forum such that I believe him when he says he has seen it multiple times. Cruiser's reputation is completely beyond reproach.
For me, I've never heard of any other brand specifically called out as a "do not use" as far as oil filters go, I've had a bad experience personally and there's evidence that the filters are demonstrably inferior. Therefore -I- will not use them. If anyone else wants to, or if you insist on doing so -- more power to you bro, like I said, it's your Jeep - do as you see fit.
CF Veteran
Joined: Nov 2017
Posts: 3,700
Likes: 238
From: Groton, MA
Year: 1995
Model: Cherokee(XJ)
Engine: I6 4.0L
In all seriousness guys - please don't let this degenerate. The case has been made for and against and folks have the information to make whatever choice they prefer.
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Joined: Dec 2016
Posts: 3,539
Likes: 416
From: SoCal
Year: 1987
Model: Cherokee (XJ)
Engine: 4.0
CF Veteran


Joined: Jan 2017
Posts: 3,413
Likes: 399
From: Connecticut
Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
I saw the video Cruiser posted, and indeed had seen it before. When I get home I think I shall head down to the local WalMart and get one to cut up cause the one he used doesn't seem right.
CF Veteran
Joined: Nov 2017
Posts: 3,700
Likes: 238
From: Groton, MA
Year: 1995
Model: Cherokee(XJ)
Engine: I6 4.0L
Go for it - post up your results - especially if you find something different.
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Joined: Nov 2015
Posts: 3,636
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From: Southern OH
Year: 1997
Model: Cherokee(XJ)
Engine: 4.0
Fram filters aren't any cheaper than a Motorcraft, Mopar or Wix filter, why not use a more trusted brand if there is little to no difference in cost?
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Joined: Dec 2016
Posts: 3,539
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From: SoCal
Year: 1987
Model: Cherokee (XJ)
Engine: 4.0
Senior Member
Joined: Nov 2017
Posts: 535
Likes: 101
From: Northern Indiana
Year: 2000, 1991
Model: Cherokee (XJ)
Engine: 4.0
It is good to have the discussion. Everyone has an opinion with some good points made but Dave has presented some sound arguments with evidence to back it up and I like that so I give him credit. If you want to be more analytical don’t give a lot of weight to comparisons where a position is based solely on a visual account, anecdotal connections and perceptions. Filtration is not a straight forward topic to discuss due to many factors. I have some experience in aerospace filtration and it becomes highly technical. A few thoughts, some of which have been brought up by Dave and others:
* Poorly maintained engines and use of low cost filters likely go together. Engines with a long history of inadequate maintenance, severe operating conditions and high miles are likely to experience more filtration failures and engine damage.
* The Fram video identifies sound test methodology and I trust they tested for and met the conditions and standards they say they did. What has changed in quality and manufacturing since is unknown and the corporate ownership has changes several times over the past 30 years.
* Changing oil to a high detergent oil (such as oil intended for diesel engines) or synthetic where oil has not been changed for some time may clean out large amounts of built up crud from the engine and contaminate a filter quicker.
* Water can have a significant effect on filter performance. Water that collects in the filter and media can freeze and restrict the filter media and bypass valve on initial start, risking internal damage on less robust filters. Water also tends to bind contaminates together to more quickly block the media.
* Antifreeze when mixed with oil forms hard globs that can quickly plug a filter and risk internal failure.
* The way automotive oil filter ratings are displayed are of little help in identifying their true performance or value. Aerospace filters are identified as meeting specific standards for test methodology, nominal particle size and Beta rating. And even at that I have seen significant differences in performance depending on how tests were performed, the type and shape of contaminates and the distribution of contaminate particle size.
The point of all this is that there are many factors involved in filtration and it is a science. I like to take an approach based on hard data. You can’t tell the quality of filtration simply by visually examining the parts. I would not give too much weight to what you see in cut up filters. Even the number of pleats is not conclusive evidence to capability as you need to understand the design criteria and performance of the media and back it up with test data. Unfortunately the info that filter manufactures typically provide are not much help. However if the manufacture, assuming you have a nominally good engine, says it is good for 5000 miles don’t expect it to work adequately for 7500 miles of hard driving on an engine that has issues such as excessive blow by or antifreeze in the oil. If one filter costs $3 and another costs $12 or $20 there is probably a reason. If you have a mechanically sound engine, do not operate it in harsh conditions and change oil routinely you can without undo worry use a low cost Fram or other similar price point filter.
* Poorly maintained engines and use of low cost filters likely go together. Engines with a long history of inadequate maintenance, severe operating conditions and high miles are likely to experience more filtration failures and engine damage.
* The Fram video identifies sound test methodology and I trust they tested for and met the conditions and standards they say they did. What has changed in quality and manufacturing since is unknown and the corporate ownership has changes several times over the past 30 years.
* Changing oil to a high detergent oil (such as oil intended for diesel engines) or synthetic where oil has not been changed for some time may clean out large amounts of built up crud from the engine and contaminate a filter quicker.
* Water can have a significant effect on filter performance. Water that collects in the filter and media can freeze and restrict the filter media and bypass valve on initial start, risking internal damage on less robust filters. Water also tends to bind contaminates together to more quickly block the media.
* Antifreeze when mixed with oil forms hard globs that can quickly plug a filter and risk internal failure.
* The way automotive oil filter ratings are displayed are of little help in identifying their true performance or value. Aerospace filters are identified as meeting specific standards for test methodology, nominal particle size and Beta rating. And even at that I have seen significant differences in performance depending on how tests were performed, the type and shape of contaminates and the distribution of contaminate particle size.
The point of all this is that there are many factors involved in filtration and it is a science. I like to take an approach based on hard data. You can’t tell the quality of filtration simply by visually examining the parts. I would not give too much weight to what you see in cut up filters. Even the number of pleats is not conclusive evidence to capability as you need to understand the design criteria and performance of the media and back it up with test data. Unfortunately the info that filter manufactures typically provide are not much help. However if the manufacture, assuming you have a nominally good engine, says it is good for 5000 miles don’t expect it to work adequately for 7500 miles of hard driving on an engine that has issues such as excessive blow by or antifreeze in the oil. If one filter costs $3 and another costs $12 or $20 there is probably a reason. If you have a mechanically sound engine, do not operate it in harsh conditions and change oil routinely you can without undo worry use a low cost Fram or other similar price point filter.
Last edited by third coast; Mar 21, 2019 at 10:42 PM.
Obviously no one is going to change anyone’s opinions on the matter . By reading your posts Dave it is clear that you believe that Fram is as good as any if “used as intended” and ran within the time frames in fine print etc etc . You seem to want unrealistic evidence of Fram failure in 100s of thousands of different engines for it to change your mind . Third Coast seems to have a similar state of mind . In all honesty anyone siding with Fram is looking way too far into this . You all keep bringing up the science involved in filtration and the filtering properties of one vs the next . Myself and others on this site work on cars every day for a living and see a lot of things most people will never see changing the oil on their one or two personal cars over the course of time . I wont get into the science of oil filter media nor am I going to waste my time reading way too far into something so simple . There are few things that you can do to prolong the life of your engine but the most important thing you can do is change your oil when it should be . You CAN run the cheapest oil and filters known to man because you think it’s “ good enough” or simply because you think that if something is allowed to be sold on shelves it has to be good ... but that’s **** poor reasoning . If your doctor came to you and said “ Phil you have cancer and we need to get rid of it . We have two options , the first option is the cheapest and while it may do the job it has a chance of killing you BUT it hasn’t killed everyone . Option 2 is slightly more expensive , does the same or similar job HOWEVER it hasn’t killed anyone . Using this reference Dave seems to be willing to take the risky first option. In the real world ... first hand ... in front of my eyes I have seen Fram and 2 other bargain brand oil filters fail either straight out of the box or prematurely even with regard to their expected service interval and an engine in otherwise “good health “ . You shouldn’t need to burn your hand on a hot stove 200,000 times to prove that it’s hot ... once should be enough . That’s my non scientific, no hard data, just a dirty greasy mechanics reasoning .
CF Veteran


Joined: Jan 2017
Posts: 3,413
Likes: 399
From: Connecticut
Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
Truth be told, I have owned up to 3 Mopar vehicles simultaneously since 1994 and used to buy Mopar filters by the case. Have gotten away from that as our new minivan uses the cartridge. Although I have used some non-Mopar filters, in my OPINION the best answer is go with the factory recommendation (look what happens when you don't follow factory recommendations with things like CPS and O2 sensors).
Anyway, my point (and TC's, if I may be so bold) is that there are "opinions" and there is "evidence-based process", as well as "disinformation" and "just plain wrong" (such as calling the Fram end-caps "cardboard" when they're not).
[Pausing to do other more fun stuff, because I can...]
CF Veteran


Joined: Jan 2017
Posts: 3,413
Likes: 399
From: Connecticut
Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
What can you possibly say about oil that gets you banned?


