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99 Jeep Cherokee 4.0 oil recommendation #4666863
02/15/18 02:06 PM
02/15/18 02:06 PM
Joined: Mar 2015
Posts: 339
New York
02s4audi Offline OP
02s4audi  Offline OP
Joined: Mar 2015
Posts: 339
New York
I was wondering what oil you recommend for a 99 Cherokee with the 4.0 I6? It has about 158k miles on it. I just purchased it so I donít know the history of what oil has been used. Iíve heard good things about RT6 in the 4.0 Jeepís but was wondering what you all thought? Also what oil filters you like?

Re: 99 Jeep Cherokee 4.0 oil recommendation [Re: 02s4audi] #4666864
02/15/18 02:10 PM
02/15/18 02:10 PM
Joined: Oct 2004
Posts: 8,324
Cincinnati, OH, USA
bullwinkle Offline
bullwinkle  Offline
Joined: Oct 2004
Posts: 8,324
Cincinnati, OH, USA
I use 10W30 in the winter in mine, and 10W40 or 15W40 in the summer. Using an XG8A Ultra for 3 5000 mile oil changes, it fits fine, is twice the size of the (same price) XG16 it calls for. 235K miles at the moment.


06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 18 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)
Re: 99 Jeep Cherokee 4.0 oil recommendation [Re: 02s4audi] #4666873
02/15/18 02:22 PM
02/15/18 02:22 PM
Joined: Apr 2008
Posts: 12,987
Onondaga County
Miller88 Offline
Miller88  Offline
Joined: Apr 2008
Posts: 12,987
Onondaga County
Oil that's between 5w-30 and 15w-40.

These engines don't care.


18 Forester 2.5I 6M
00 Jeep Cherokee
01 Ford F-350 XL 4x4 5M
Re: 99 Jeep Cherokee 4.0 oil recommendation [Re: 02s4audi] #4666875
02/15/18 02:25 PM
02/15/18 02:25 PM
Joined: May 2012
Posts: 1,836
The land of USA-made Subies!
SubieRubyRoo Offline
SubieRubyRoo  Offline
Joined: May 2012
Posts: 1,836
The land of USA-made Subies!
Anything that's clean and thicker than camel snot.

30 or 40 weight oils do the trick.

Re: 99 Jeep Cherokee 4.0 oil recommendation [Re: SubieRubyRoo] #4666892
02/15/18 02:41 PM
02/15/18 02:41 PM
Joined: Jul 2002
Posts: 4,549
KY
MCompact Offline
MCompact  Offline
Joined: Jul 2002
Posts: 4,549
KY
Originally Posted By: SubieRubyRoo
Anything that's clean and thicker than camel snot.

30 or 40 weight oils do the trick.


This. I run 10W-30 M1 or PP year round.


Mine:
2014 M235i
2009 Cooper Clubman
1999 Wrangler Sahara
1995 318ti Club Sport

Wife's:
2015 X1 xDrive28i


Son's
2009 328i

Buy what makes you smile...
Re: 99 Jeep Cherokee 4.0 oil recommendation [Re: 02s4audi] #4666898
02/15/18 02:46 PM
02/15/18 02:46 PM
Joined: Jun 2017
Posts: 619
DFW
JustN89 Offline
JustN89  Offline
Joined: Jun 2017
Posts: 619
DFW
My I6 in my old Grand Cherokee loved PYB 5/10W-30.

Re: 99 Jeep Cherokee 4.0 oil recommendation [Re: bullwinkle] #4666902
02/15/18 02:49 PM
02/15/18 02:49 PM
Joined: Oct 2017
Posts: 506
Northeastern Vermont
littleant Offline
littleant  Offline
Joined: Oct 2017
Posts: 506
Northeastern Vermont
Originally Posted By: bullwinkle
I use 10W30 in the winter in mine, and 10W40 or 15W40 in the summer. Using an XG8A Ultra for 3 5000 mile oil changes, it fits fine, is twice the size of the (same price) XG16 it calls for. 235K miles at the moment.
Bullwinkle you have and oil pressure gauge in your jeep. Between the standard size Fran and the longer (larger) one with the same weight oil is your start up and running pressure the same between the two filters. Thank you


I can't prevent getting old but I REFUSE to grow up.
2010 Mountaineer 4.0
2002 Jeep Wrangler TJ 4.0
Re: 99 Jeep Cherokee 4.0 oil recommendation [Re: 02s4audi] #4666906
02/15/18 02:53 PM
02/15/18 02:53 PM
Joined: Dec 2003
Posts: 9,927
Florida, Cape Coral
Eddie Offline
Eddie  Offline
Joined: Dec 2003
Posts: 9,927
Florida, Cape Coral
In ILL I ran 5w30PP year around.


CX5 Touring 2.5L :-)
Re: 99 Jeep Cherokee 4.0 oil recommendation [Re: 02s4audi] #4666917
02/15/18 03:01 PM
02/15/18 03:01 PM
Joined: Mar 2015
Posts: 339
New York
02s4audi Offline OP
02s4audi  Offline OP
Joined: Mar 2015
Posts: 339
New York
Also forgot to mention I live in NY If that matters. It donít be beat on but will see some occasional off-road and spirited driving.... as much spirited as a Cherokee could do lol

Re: 99 Jeep Cherokee 4.0 oil recommendation [Re: 02s4audi] #4666951
02/15/18 03:44 PM
02/15/18 03:44 PM
Joined: Oct 2012
Posts: 2,328
Northern Ontario, Canada
Danno Offline
Danno  Offline
Joined: Oct 2012
Posts: 2,328
Northern Ontario, Canada
If it was my Jeep, 10W-30 PYB, all year around.


2016 Sorento SX V6 AWD
2015 KIA RIO SX
2010 Mazda 3 2.0L
2009 Venza V6 AWD
2013 Sonata 2.4L RIP in write-off crash
Re: 99 Jeep Cherokee 4.0 oil recommendation [Re: littleant] #4666970
02/15/18 04:00 PM
02/15/18 04:00 PM
Joined: Oct 2004
Posts: 8,324
Cincinnati, OH, USA
bullwinkle Offline
bullwinkle  Offline
Joined: Oct 2004
Posts: 8,324
Cincinnati, OH, USA
Originally Posted By: littleant
Originally Posted By: bullwinkle
I use 10W30 in the winter in mine, and 10W40 or 15W40 in the summer. Using an XG8A Ultra for 3 5000 mile oil changes, it fits fine, is twice the size of the (same price) XG16 it calls for. 235K miles at the moment.
Bullwinkle you have and oil pressure gauge in your jeep. Between the standard size Fran and the longer (larger) one with the same weight oil is your start up and running pressure the same between the two filters. Thank you
Funny you should mention that-gauge indicates lousy with either one, but my brand new OEM Mopar sender just came in from Rock Auto yesterday, I'll be putting it in this weekend (if the monsoon lets up long enough!).


06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 18 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)
Re: 99 Jeep Cherokee 4.0 oil recommendation [Re: 02s4audi] #4666973
02/15/18 04:02 PM
02/15/18 04:02 PM
Joined: Oct 2004
Posts: 8,324
Cincinnati, OH, USA
bullwinkle Offline
bullwinkle  Offline
Joined: Oct 2004
Posts: 8,324
Cincinnati, OH, USA
BTW-the factory recommendation is 10W30 on these-IMHO a silicone ADBV in the oil filter is almost more important than the oil weight, they have a tendency to drain the sideways filter overnight with a nitrile one. Resulting in more of a startup racket than usual, if that's possible...


06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 18 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)
Re: 99 Jeep Cherokee 4.0 oil recommendation [Re: 02s4audi] #4666977
02/15/18 04:05 PM
02/15/18 04:05 PM
Joined: Nov 2011
Posts: 1,242
Lyndhurst NJ
Audios Offline
Audios  Offline
Joined: Nov 2011
Posts: 1,242
Lyndhurst NJ
Someone mentioned this in another thread, great deal, would work great for you too

https://smile.amazon.com/Valvoline-10W-40-MaxLife-Mileage-Motor/dp/B008QDXADW/ref=sr_1_1?ie=UTF8&qid=1518732310&sr=8-1&keywords=10%2F40+valvoline+maxlife


2002 VW Golf TDI-Mobil 1 5/40 TDT
2007 Mercedes GL320 CDI Fuchs 5/40 GT Pro XTL
2005 BMW M3 BMW Twin Power 10/60
2003 BMW M5-Fuchs 5/40
1998 BMW M3/4/5 Fuchs 5/40
Re: 99 Jeep Cherokee 4.0 oil recommendation [Re: Audios] #4666988
02/15/18 04:22 PM
02/15/18 04:22 PM
Joined: Oct 2004
Posts: 8,324
Cincinnati, OH, USA
bullwinkle Offline
bullwinkle  Offline
Joined: Oct 2004
Posts: 8,324
Cincinnati, OH, USA
Originally Posted By: Audios
Someone mentioned this in another thread, great deal, would work great for you too

https://smile.amazon.com/Valvoline-10W-40-MaxLife-Mileage-Motor/dp/B008QDXADW/ref=sr_1_1?ie=UTF8&qid=1518732310&sr=8-1&keywords=10%2F40+valvoline+maxlife
That's my summer oil, loads of Maxlife NextGen 10W40 from the O'Reilly clearance, still have probably 70-80 quarts left.


06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 18 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)
Re: 99 Jeep Cherokee 4.0 oil recommendation [Re: bullwinkle] #4667007
02/15/18 04:42 PM
02/15/18 04:42 PM
Joined: Aug 2010
Posts: 5,940
Champlain/Hudson Valley
Kira Offline
Kira  Offline
Joined: Aug 2010
Posts: 5,940
Champlain/Hudson Valley
Used 5-30 and 10-30 in Sis' Cherokee. Sale dino and filter packages from America's usual auto stores.
It REALLY loved the "Formula Shell" 10W-30 from Costco.

Didn't burn any. Sold it with 171K.

See when the secondaries were last changed (cap, rotor, plugs, wires). I swapped in new parts and didn't tell her.
She came by to visit and said, "Wow, what did you do to my car!" She was happy.

Replace the PCV grommets, elbows (one's an elbow the other has the PCV orifice) and vacuum source pipe.
VC gasket change was the best money I ever spent.

How much did you pay for your '99?

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