best oil and oil filter
Senior Member
Joined: Aug 2012
Posts: 618
Likes: 0
From: Goshen Ohio
Year: 1993
Model: Cherokee
Engine: I6
Originally Posted by Radi
Oh for Pete's sake, between this and the "eggs in the radiator" discussion in another thread, I'm gonna give up and just go to Denny's.
Last time I skip breakfast. Bad idea.

Senior Member
Joined: May 2009
Posts: 800
Likes: 3
From: The Dirty 530
Year: 1988
Model: Cherokee
Engine: 4.0 Renix I6

On topic:
I agree with the Rotella/Wix combo. Check out this vid on Oil Filter quality.
What does it matter...The 4.0 would run on cooking oil !!!!
What you are asking for is just as annoying as a telephone survey. There is no one correct answer or one bad answer.
You need to search for a study with data. Consumer reports done one awhile back,ran a fleet of taxis over 100k with every major oil brand then tore engines down and measured wear. Their report and data found NO significant wear difference from one brand to another. Personally I run wally world 15-40 tractor and fleet oil that is high in zinc. The 4.0 is basically a tractor engine!
What you are asking for is just as annoying as a telephone survey. There is no one correct answer or one bad answer.
You need to search for a study with data. Consumer reports done one awhile back,ran a fleet of taxis over 100k with every major oil brand then tore engines down and measured wear. Their report and data found NO significant wear difference from one brand to another. Personally I run wally world 15-40 tractor and fleet oil that is high in zinc. The 4.0 is basically a tractor engine!
Last edited by bigbadon; Nov 26, 2012 at 06:01 PM.
Seasoned Member
Joined: Jul 2012
Posts: 405
Likes: 0
From: Western, Pa (5 mins away from ohio border)
Year: 1999
Model: Cherokee
Engine: straight 6 (4.0L)
For the record I am using the search menu and it took me a good 5-10 mins just to find this thread, I am on a mobile device so maybe the search isn't as good but all that kept coming up is 20-30 oil and oil filter leak questions, that being said I understand it has more than likely been covered and re-covered but if nobody can find it that doesn't really matter
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
For the record I am using the search menu and it took me a good 5-10 mins just to find this thread, I am on a mobile device so maybe the search isn't as good but all that kept coming up is 20-30 oil and oil filter leak questions, that being said I understand it has more than likely been covered and re-covered but if nobody can find it that doesn't really matter
i use 5w30 oil year round, whatever is the cheapest when i buy it, mostly walmart or canadian tire brand
filter i use the cheapest on the shelf, fram is on sale alot, its aboot 50/50 fram and canadian tire store brand
i change the oil and filter once a year, regardless of miles.
filter i use the cheapest on the shelf, fram is on sale alot, its aboot 50/50 fram and canadian tire store brand
i change the oil and filter once a year, regardless of miles.
Junior Member
Joined: Sep 2012
Posts: 89
Likes: 0
From: West of Boston
Year: 2000
Model: Cherokee
Engine: 4.0
Castrol Edge 10W-30 full synthetic last time but pretty much any quality full synthetic... oh and a K & N filter....
Last edited by MACherokee; Feb 5, 2013 at 01:27 PM.
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
i use 5w30 oil year round, whatever is the cheapest when i buy it, mostly walmart or canadian tire brand
filter i use the cheapest on the shelf, fram is on sale alot, its aboot 50/50 fram and canadian tire store brand
i change the oil and filter once a year, regardless of miles.
filter i use the cheapest on the shelf, fram is on sale alot, its aboot 50/50 fram and canadian tire store brand
i change the oil and filter once a year, regardless of miles.



