Oil help needed
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Senior Member
Joined: Apr 2013
Posts: 781
Likes: 2
From: Dawson Springs, KY
Year: 1985
Model: Cherokee
Engine: 2.5L
I'm new to XJs but I have been running Mobile 1 with K&N filters in my 96 F150 4.9L I6 for the past 16years/240k miles and even at 10k miles per oil change the oil still looks almost new.
Keeping the oil clean is the key. Good filter, and change it more often if you are running in dusty areas or are mudding. Air filter also affects oil quality since the intake for the crankcase is tied into the intake system.
Keeping the oil clean is the key. Good filter, and change it more often if you are running in dusty areas or are mudding. Air filter also affects oil quality since the intake for the crankcase is tied into the intake system.
CF Veteran
Joined: Apr 2012
Posts: 5,302
Likes: 23
From: Wisconsin
Model: Cherokee
IMHO 830 is more than sufficient for the low valvetrain pressures in the 4.0, the additive probably isn't necessary. Can't say I've ever heard of a zinc level related factory cam failure in that motor.
Here are some zinc/phosphorous numbers for Valvoline, Mobil1 and a few other products:- scroll down to the end
http://store.forcedperformance.net/m...otor%20Oil.pdf
Last edited by Radi; Jun 26, 2013 at 02:18 AM.
Junior Member
Joined: May 2012
Posts: 74
Likes: 0
From: CMC=7 Blocks from the Atlantic
Year: 2001
Model: Cherokee
Same here. I use a NAPA Silver and 10w-30 high mileage. Sometimes Sper Tech sometimes Mobil or Valvoline. 178k on my 2001 XJ. Runs great and I don't add oil in the 4000-5000 mile interval.
Thread Starter
Seasoned Member
Joined: Sep 2011
Posts: 298
Likes: 1
From: Winchester, VA
Year: 2000
Model: Cherokee
Engine: 4.0L I6
I'm new to XJs but I have been running Mobile 1 with K&N filters in my 96 F150 4.9L I6 for the past 16years/240k miles and even at 10k miles per oil change the oil still looks almost new.
Keeping the oil clean is the key. Good filter, and change it more often if you are running in dusty areas or are mudding. Air filter also affects oil quality since the intake for the crankcase is tied into the intake system.
Keeping the oil clean is the key. Good filter, and change it more often if you are running in dusty areas or are mudding. Air filter also affects oil quality since the intake for the crankcase is tied into the intake system.
CF Veteran
Joined: Aug 2010
Posts: 2,112
Likes: 4
From: Wantage, NJ
Year: 1995
Model: Cherokee
Engine: 4.0 I6
Senior Member
Joined: Jan 2012
Posts: 952
Likes: 4
Year: 2004
Model: Grand Cherokee
Engine: 2000 4.0
x2^^^ Walmart Supertech 15-40 industrial fleet oil is great stuff and $$ easy on pocketbook
Thread Starter
Seasoned Member
Joined: Sep 2011
Posts: 298
Likes: 1
From: Winchester, VA
Year: 2000
Model: Cherokee
Engine: 4.0L I6