List of Junk oil Filters for your jeep 4.0
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Now... if you have a junk filter on there that has either collapsed or blown apart, that's a different story.
No - oil pressure is an indication of bearing integrity (if everything else is working properly). If you have 10 PSI oil pressure before you install a different filter you haven't solved any problems. That's kind of like breaking your leg, taking percocet to ease the pain, then declaring "it doesn't hurt anymore - leg's fine now"
Now... if you have a junk filter on there that has either collapsed or blown apart, that's a different story.
Now... if you have a junk filter on there that has either collapsed or blown apart, that's a different story.
True but your missing the point. I did not state that this would fix anything. My GC has only 4psi and oil is barely making it to the rockers because the worn bearings are causing most of the oil volume to be bled off. A low restrictive filter will help to get just a little more volume to the top of the engine.
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
True but your missing the point. I did not state that this would fix anything. My GC has only 4psi and oil is barely making it to the rockers because the worn bearings are causing most of the oil volume to be bled off. A low restrictive filter will help to get just a little more volume to the top of the engine.
CF Veteran
Joined: Apr 2009
Posts: 4,734
Likes: 12
Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
Apparently lots of filters use cardboard/fiber end discs, including Bently.
The truth about oil filter end caps FRAM Filtration - YouTube

The truth about oil filter end caps FRAM Filtration - YouTube
Seasoned Member
Joined: Jul 2011
Posts: 324
Likes: 1
From: Richmond, Va
Year: 1992
Model: Cherokee
Engine: 4.0 liter I6
they are not all created equally. Take for example the MINI cooper. The aftermarket filters for those do not perform. The filters look the same but will keep throwing an oil pressure light. Put a factory filter in and the problem is resolved. On the new MINI Coopers the after market filters collapse which will cause oil starvation to the turbocharger frying it. So you guys choose as you like but I will stay with factory filters for my vehicles.
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Nah, HP-2004 is the same as M1-204. It's an OEM-sized Mobil 1 filter with about a $3 nut 
Curious though - why one of the best filters on the market with one of the cheapest oils?
Curious though - why one of the best filters on the market with one of the cheapest oils?
CF Veteran
Joined: Apr 2009
Posts: 4,734
Likes: 12
Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
Castrol GTX made my '87's engine rattle. Castrol is what Walmart used in it. (It was away from me. My daughter had it.)
When I got it back, I drained the Walmart Castrol out and put Mobil 1 back in, with a Wix filter.
Quietened back down.
When I got it back, I drained the Walmart Castrol out and put Mobil 1 back in, with a Wix filter.
Quietened back down.
CF Veteran
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
CF Veteran
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
I though about grabbing Mobil 1 but then I seen super Mobil 1 I think. Couldn't make up my mind. Grabbed castrol. Lol.
Maybe next time.



........haven't seen any on the side of the road (with a failed oil filter).

Don't forget, u'll be a qt low.