Recent Topics
Classic road brake pads
by buck91. 09/23/18 06:18 PM
Air up your vehicle's tires
by Papa Bear. 09/23/18 06:07 PM
A cool litttle Fall foliage site
by Papa Bear. 09/23/18 06:02 PM
Suggestion: "Likes"
by SnowDrifter. 09/23/18 05:36 PM
Condensation in headlights?
by irv. 09/23/18 05:06 PM
Nissan VQ V-6 Engines
by Al. 09/23/18 04:57 PM
List of dexos licensed oils?
by k1xv. 09/23/18 04:24 PM
High flow oil pump? Thinner oil?
by SnowDrifter. 09/23/18 04:06 PM
Is Tiger back?
by gman2304. 09/23/18 03:51 PM
Castrol Edge Pro OE LLIV FE 0W20 for VW508
by BrandonT. 09/23/18 03:33 PM
Value of 90's stereo equipment
by wrcsixeight. 09/23/18 03:28 PM
Wisdom of BITOG'ers wanted- 19 Avalon Hybrid oil
by scion_xb. 09/23/18 02:36 PM
w116 300sd Mercedes Diesel HPR fuel
by Gito. 09/23/18 02:14 PM
Power Stop Wheel Bearing/Hubs?
by oilpsi2high. 09/23/18 01:37 PM
Dump the 30k ATF in the 17 Kia?
by 3Aone. 09/23/18 01:31 PM
Miata Aisin 6 speed question
by 10ecfarmer. 09/23/18 12:36 PM
Shortest time you owned a car?
by Corollaman. 09/23/18 12:21 PM
Winter tires pinned for studs, but without studs
by Corollaman. 09/23/18 12:12 PM
03 Accord V6 "needs" iridium plugs?
by columnshift. 09/23/18 11:40 AM
Newest Members
The_Money_Light, DALTRON0659, skippermatt, HondaTech250, SandCruzer
66047 Registered Users
Who's Online Now
117 registered members (77GrandPrix, 02z, Astro14, Ablebody, 2010Civic, 15 invisible), 1,678 guests, and 45 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics290,904
Posts4,852,232
Members66,047
Most Online3,590
Jan 24th, 2017
Donate to BITOG
Previous Thread
Next Thread
Print Thread
Hop To
Page 1 of 2 1 2
Jeep 4.0 oil for summer and winter #4444178
06/28/17 06:28 PM
06/28/17 06:28 PM
Joined: Nov 2016
Posts: 1,278
WI
HoosierJeeper Offline OP
HoosierJeeper  Offline OP
Joined: Nov 2016
Posts: 1,278
WI
I know the Jeep 4.0 oil topic is pretty beat to death on the Jeep forums but I trust these answers a lot more!
Going to do an oil change on mine within the next few weeks. Right now I have Pennzoil HM 10w40 in it, it was on sale at Walmart and before that it was Pennzoil HM 5w30 for winter. Seems to have helped the leaks. Don't want to run Pennzoil HM again because my local Walmart doesn't stock individual quarts of it in weights besides 5w20/30 and I don't want to pay $8 for the extra quart at an autopart store (takes 6 quarts). Furthermore, if I change the oil now, it likely won't hit 4-5k miles before we get single digit temps starting in December/ January. So I don't think 10w40 would be the best choice. However, with July and August coming, 100 degree temps are possible too. I guess my question is, what would be a good weight that would suit the timeframe of this OCI? The manual says 5w30 from below 0-60F, 10w30 from 10-100+. Mine has 133k miles on it.

Walmart here stocks Maxlife in all the popular weights. Is there such a thing as a 5w40 Maxlife?

Sorry for the diatribe!

Last edited by HoosierJeeper; 06/28/17 06:42 PM.

15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)
Re: Jeep 4.0 oil for summer and winter [Re: HoosierJeeper] #4444195
06/28/17 06:45 PM
06/28/17 06:45 PM
Joined: Sep 2015
Posts: 981
PENNSYLVANIA
JeepWJ19 Offline
JeepWJ19  Offline
Joined: Sep 2015
Posts: 981
PENNSYLVANIA
My 4.0 has bad lifters. Every cold start it would tick loudly.

My friend with a 4.0 said to use M1 HM and the 10w30 and 5w30 (winter) completely silenced those cold start ticks.

I have M1 HM 10w40 in right now and the ticking has come back to normal. Must be the thick 3.9HTHS.

I'd say give M1 HM a shot. It has been good to me for my 2002 4.0. I would roll with 5w30 and sub a quart for 10w30 or 10w40 and use it year round. That is my plan at least.


2002 Jeep WJ 4.0 | Mobil 1 HM 5w30 |
TG8A | 2.5" lift | 148k miles

Software Engineer :]
Re: Jeep 4.0 oil for summer and winter [Re: HoosierJeeper] #4444276
06/28/17 08:27 PM
06/28/17 08:27 PM
Joined: Oct 2005
Posts: 4,343
Kansas
Kruse Offline
Kruse  Offline
Joined: Oct 2005
Posts: 4,343
Kansas
I've got two '96 4.0 Cherokees and a '98 Grand Cherokee, all with the 4.0 engine. I use 10W-30 in all the engines and I can't really complain about any of them, except the one Cherokee with almost 300K miles has some lifters click at startup and some cold-engine piston slap that goes away after 30 seconds or so.
I use whatever 10W-30 that I have on hand, but lately a lot of Trop-Artic and Peak.
Depending on the year of your 4.0 engine, I'd worry more about a broken piston skirt, a rod going through the block or a cracked 0331 head than I would about the kind of oil being used in a 4.0 Jeep.

Re: Jeep 4.0 oil for summer and winter [Re: HoosierJeeper] #4444278
06/28/17 08:30 PM
06/28/17 08:30 PM
Joined: Feb 2013
Posts: 10,708
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 10,708
Phoenix, AZ
I don't think they're picky. In my 96' XJ I've run Castrol GTX HM 10w30, MaxLife 10w40, Pennzoil Platinum HM 5w30, Chevron Supreme HM 10w40, Mobil 1 HM 10w30, and currently Napa Conventional 10w30. It runs the same on all of them.

So just pick a quality 10w30 for summer and a 5w30 for winter and you should be fine.

I've heard the 4.0L likes to shear 5w30 so I wouldn't do too long of an OCI, something like 3,000 miles should be fine.

I also have only used Fram Ultra filters and Wix, no issues with either.


2015 Hyundai Sonata 2.4L 84k Mobil 1 AFE 0w30 & OEM
2000 Toyota Camry 2.2L 230k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: Jeep 4.0 oil for summer and winter [Re: HoosierJeeper] #4444298
06/28/17 08:43 PM
06/28/17 08:43 PM
Joined: Mar 2004
Posts: 20,758
Upstate NY
Donald Offline
Donald  Offline
Joined: Mar 2004
Posts: 20,758
Upstate NY
Synthetic 10W30 is what I used in my Jeep 4.0.


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Jeep 4.0 oil for summer and winter [Re: HoosierJeeper] #4444299
06/28/17 08:44 PM
06/28/17 08:44 PM
Joined: Nov 2016
Posts: 1,278
WI
HoosierJeeper Offline OP
HoosierJeeper  Offline OP
Joined: Nov 2016
Posts: 1,278
WI
Would the 10w30 be too thick at around 0 degrees or a little cooler? I guess worst case change it from the 10w30 to 5w30 when the cold temps hit even if it's only been 3k on the 10w.


15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)
Re: Jeep 4.0 oil for summer and winter [Re: HoosierJeeper] #4444313
06/28/17 08:57 PM
06/28/17 08:57 PM
Joined: Feb 2010
Posts: 200
Knoxville, Tennessee
svhanc Offline
svhanc  Offline
Joined: Feb 2010
Posts: 200
Knoxville, Tennessee
I have had pretty good results with the Xw30 HM oil calming down the small oil weeps.
The 4.0 is just a hot-running engine, so I would stick to synthetic.


2010 Toyota Tacoma 4x4 2.7 5spd ([email protected]&Fram [email protected])
2001 Jeep Cherokee XJ 4.0 Auto ([email protected]&Fram [email protected])
2007 Suzuki SV650N
Re: Jeep 4.0 oil for summer and winter [Re: HoosierJeeper] #4444384
06/28/17 10:09 PM
06/28/17 10:09 PM
Joined: Jun 2011
Posts: 1,755
Crawfordville FL
SilverFusion2010 Offline
SilverFusion2010  Offline
Joined: Jun 2011
Posts: 1,755
Crawfordville FL
Maxlife 5w-30
M1 HM 5w-30

Either of those could be run year round


2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30
Re: Jeep 4.0 oil for summer and winter [Re: HoosierJeeper] #4444715
06/29/17 09:26 AM
06/29/17 09:26 AM
Joined: Apr 2017
Posts: 101
Michigan
Building3 Offline
Building3  Offline
Joined: Apr 2017
Posts: 101
Michigan
Pennzoil Ultra Platinum 10w-30 for my 2003 4.0l. Just had an oil analysis: basically still a brand new engine, so I will continue to use it.

Re: Jeep 4.0 oil for summer and winter [Re: HoosierJeeper] #4444749
06/29/17 09:47 AM
06/29/17 09:47 AM
Joined: Jul 2002
Posts: 4,397
KY
MCompact Offline
MCompact  Offline
Joined: Jul 2002
Posts: 4,397
KY
I've been running M1 10W-30 in my 1999 Wrangler since 2002. No complaints.


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

Wife's:
2009 Cooper Clubman

Son's
2009 328i

Buy what makes you smile...
Re: Jeep 4.0 oil for summer and winter [Re: HoosierJeeper] #4444927
06/29/17 12:43 PM
06/29/17 12:43 PM
Joined: Nov 2016
Posts: 1,278
WI
HoosierJeeper Offline OP
HoosierJeeper  Offline OP
Joined: Nov 2016
Posts: 1,278
WI
Thanks for the help everyone! I think I will do a 10w30 (it seems like it'd be fine even if it gets pretty cold here and by December or Jan it'll be ready for an oil change).

From my research, QS Defy (now just known as High Mileage) has higher ZDDP, is that still true? I'll either run that or Maxlife.


15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)
Re: Jeep 4.0 oil for summer and winter [Re: HoosierJeeper] #4444949
06/29/17 12:56 PM
06/29/17 12:56 PM
Joined: Oct 2015
Posts: 2,660
Balearic Islands , Spain
FordCapriDriver Offline
FordCapriDriver  Offline
Joined: Oct 2015
Posts: 2,660
Balearic Islands , Spain
The Jeep 4.0 does just fine on low ZDDP SN 30 grades.


1975 Ford Capri II Ghia 3000 V6, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO.

1988 Ford Escort Mk4 Xr3i Cabrio, - Shell Rimula R4X 15W-40, w/ 30% Helix 3 20W-50.
Re: Jeep 4.0 oil for summer and winter [Re: HoosierJeeper] #4445137
06/29/17 04:11 PM
06/29/17 04:11 PM
Joined: Sep 2015
Posts: 5,858
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,858
Kalifornia Kollective
10W is good to way below zero on the thermometer smile


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Jeep 4.0 oil for summer and winter [Re: HoosierJeeper] #4445427
06/29/17 09:47 PM
06/29/17 09:47 PM
Joined: Nov 2016
Posts: 1,278
WI
HoosierJeeper Offline OP
HoosierJeeper  Offline OP
Joined: Nov 2016
Posts: 1,278
WI
Thanks guys, I'll just pick whichever 10w30 HM seems to strike my fancy that day since it looks like the Jeep (we named him Carlos) will be happy with any of them.


15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)
Re: Jeep 4.0 oil for summer and winter [Re: HoosierJeeper] #4445845
06/30/17 10:19 AM
06/30/17 10:19 AM
Joined: Apr 2017
Posts: 101
Michigan
Building3 Offline
Building3  Offline
Joined: Apr 2017
Posts: 101
Michigan
To answer your question about QS Defy High Mileage: the new formulation no longer has the higher zinc.

Page 1 of 2 1 2

BOB IS THE OIL GUY® Powered by UBB.threads™