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My 98 XJ had Fram filters on it for over a decade and never had an issue.  The 4.0 will be down with whatever you put on it.  I'd use something better if I could but if you've got to use Fram, use it.  Idk why people hate Fram so much, I've yet to see actual proof of a Fram filter causing issues.

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Fram fixed some of their issues.  And their higher end filters are actually decent. However they definitely make some not great cheap filters and there has been failures from them.

 

That said I can easily get a dozen different brands of filters for the Renix, so I don't know why you would use a Fram.

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a fram filter collapsed internally and stole all my oil pressure at idle a bunch of years ago.  Didn't realize what the issue was (I feared some sort of internal engine failure but it made mo noises and didn't leak any oil) and was on a trip so I just kinda dealt with it and 3-pedaled it ti always keep the idle up a bit for a few days til I got home.  once I changed the filter all was magically well again. 

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I bought my '90 new, used it as a daily driver for the first 12 years (at least 80 miles per week day) used Fram filters and cheap Chevron conventional oil every 5000 miles. Just checked the compression three weeks ago ~140 psi across all cylinders with 258000 miles.

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38 minutes ago, fiatslug87 said:

I bought my '90 new, used it as a daily driver for the first 12 years (at least 80 miles per week day) used Fram filters and cheap Chevron conventional oil every 5000 miles. Just checked the compression three weeks ago ~140 psi across all cylinders with 258000 miles.

 

Fram cheaped out in the early 2000s.  Before then they were good.  And as I said, it's really only their lowest end filters that suck for the most part.

 

The 4.0 is also tough enough that it will likely survive using them...  unless you have a total failure of the filter, which does happen.  Pete was damn near to that happening.

 

I don't see why you would use them when there is better filters for the same price or less.

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3 minutes ago, omega_rugal said:

the metric thread, it´s rare here, the only ones are fram... or else i can keep waiting for better brands to become availble

 

Then get the standard standpipe and be done with it.

 

Or be like me and buy 20 filters off rockauto when they're marked down. :laugh:

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17 minutes ago, omega_rugal said:

 

not available either, happens when you live in the middle of nowhere, litteraly...

 

https://www.ebay.com/itm/Jeep-Oil-Filter-Screw-Adapter-Fitting-2-5L-4-0L-53007563AB-Wrangler-YJ-TJ-LJ-XJ/202682844175?fits=Make%3AJeep&hash=item2f30d6c40f:g:5~sAAOSwlZ5c4Fe2&vxp=mtr

 

Or probably this: https://www.ebay.com/itm/Jeep-Oil-Filter-Screw-Adapter-Fitting-2-5L-4-0L-53007563AB-Wrangler-YJ-TJ-LJ-XJ/202682844175?fits=Make%3AJeep&hash=item2f30d6c40f:g:5~sAAOSwlZ5c4Fe2&vxp=mtr

 

Point is they're on eBay often enough.  Search the OEM P/N and buy one that will ship to you.

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Or this:

 

RENIX OIL FILTER TO SAE FILTER

Tired of having a poor selection of oil filters for your Renix Jeep? Limited availabilty a pain for you? 20mm threads? We don’t need mumblemeter threads on our oil filters.

Here’s a simple mod that allows you to use the very popular SAE threaded oil filters which are more readily available. The old standard 3/4″ SAE thread.

You can purchase a new oil filter nipple from the dealer for under $10 and never be bothered again. Part number 53007563AB. It’s the one on the left. 53007563AB 7-8 15-16

Or, grab one off a 91 and later XJ at the junkyard. Be forewarned though. You need a 7/8 wrench to remove a Renix nipple, but a 15/16 wrench for the later style.

And just in case you need to replace your oil filter adapter o-rings, here’s a handy guide.

Oil Filter Adapter O-Ring Sizes
87-90 Renix Model O-rings

0.799 x 0.103 AS568 size -117
1.296 x 0.139 AS568 size -219
2.484 x 0.139 AS568 size –230

Dealer Part Numbers for Renix. Sold individually:

33002970, 33002971, 33002972

Renix kit from Crown Automotive-33002970K

91-01 HO Model Orings

0.676 x 0.070 AS568 size -017
0.859 x 0.139 AS568 size -212
2.484 x 0.139 AS568 size -230

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On 8/2/2019 at 8:25 PM, Dzimm said:

My 98 XJ had Fram filters on it for over a decade and never had an issue.  The 4.0 will be down with whatever you put on it. 

 

No, it won't. There have been far too many documented cases of members here who had low or no oil pressure that was entirely fixed by throwing away their Fram oil filter for there to be any reason whatsoever to use a Fram filter on a Jeep engine.

 

DON'T ... DO ... IT.

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I can vouch for that MoPar filter. Still a crap load left and I think Chrysler wants to get rid of them. They can be had pretty cheap. But the dealer will get a pack of twelve if they order it for you so they could have them on the shelf until your next oil change. I still have four left at my work.

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Back in the late 80’s and mid 90’s Chrysler issued a TSB ( technical service bulletin) with a list of approved oil filters.Fram was NOT the list.there was an issue with no drain back valve in the oil filter. This was a problem on the Mitsubishi engines Chrysler used back then. Drain back caused dry engine-starts and early engine failure. The 2nd bulletin was issued because the filters were coming apart and plugging the oil squirters and wiping out the pistons.


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