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2004 Rubicon Oil #4591892
12/02/17 10:46 AM
12/02/17 10:46 AM
Joined: Dec 2016
Posts: 12
Pennsylvania
mmohr Offline OP
mmohr  Offline OP
Joined: Dec 2016
Posts: 12
Pennsylvania
Sorry to bring up an old topic, but i have not seen many recent posts and things change with technology. should be an easy question for all of you oil enthusiasts, I have an 04 Rucicon that is my toy. It gets about 3000 miles per year on. Mostly sits in garage. I currently run Amsoil Sig series 10/30
I have been reading about the M1 Delvac 5/40 as being an excellent choice. I only change oil once per year, Is there any better choices for my situation of barely driving that would better fit the flat tappet engine? Or stick with the Amsoil?

Re: 2004 Rubicon Oil [Re: mmohr] #4591921
12/02/17 11:18 AM
12/02/17 11:18 AM
Joined: Mar 2013
Posts: 4,755
The Midwest
skyactiv Offline
skyactiv  Offline
Joined: Mar 2013
Posts: 4,755
The Midwest
I think what your using is just fine.


Wife: 15' Audi A4 quattro 6 speed manual
Me: 13' VW GTI 3 door 6 speed manual
Re: 2004 Rubicon Oil [Re: mmohr] #4591927
12/02/17 11:25 AM
12/02/17 11:25 AM
Joined: Mar 2008
Posts: 5,839
South Florida
bubbatime Offline
bubbatime  Offline
Joined: Mar 2008
Posts: 5,839
South Florida
That old, and I mean OLD design 4.0 straight six engine, loves a 40 weight oil. I would run any of the synthetic 5W40 heavy duty diesel/gas oils, such as Delo or Rotella.

Your car called for API certified oil meeting SM. If that's important to you, just make sure the back of the bottle says SM, or the superseded SN. Some of the the dual rated oils have been removing the gas SM/SN ratings.

If the Jeep gets driven on the highway only, then a 30 weight would be fine. If it sees a lot of idle time (like on trails), then a 40 weight would be better. Id just run a 40 weight anyways, due to these engines running well on them, and being a 40 year old engine design.


17 Chrysler Pacifica Mobil 1 5W30
13 Yamaha XT250 Valv MC 10W40
12 Suzuki S40 Rotella 15W40
10 Acura TSX 2.4 PZL Plat 5W30
06 GMC Sierra Nextgen 10W30


Re: 2004 Rubicon Oil [Re: mmohr] #4591928
12/02/17 11:26 AM
12/02/17 11:26 AM
Joined: Feb 2013
Posts: 10,682
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 10,682
Phoenix, AZ
Any old 10w30 would work fine. My 4.0L sits a lot, only 3,000 miles a year or so.

If you're gonna drive it in the freezing cold, use a 5w30.


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: 2004 Rubicon Oil [Re: mmohr] #4591930
12/02/17 11:28 AM
12/02/17 11:28 AM
Joined: Sep 2015
Posts: 5,839
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,839
Kalifornia Kollective
Premium full syn for 3K - um, I'd prolly go 2 years on a change ...

You are good on Delvac if you want ... But the Amsoil can certainly go a lot longer, and it's good oil smile

Lots of good oils out there. Most any of the Euro spec 0W-30's or 0W-40's would be up to the task. Take your pick. You are certainly not beating on the oil. That motor is not hard on oil 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: 2004 Rubicon Oil [Re: mmohr] #4592058
12/02/17 02:02 PM
12/02/17 02:02 PM
Joined: Dec 2016
Posts: 12
Pennsylvania
mmohr Offline OP
mmohr  Offline OP
Joined: Dec 2016
Posts: 12
Pennsylvania
How about this?? Or the Delvac better?

Amsoil Signature Series Max-Duty Synthetic Diesel Oil 5W-40

https://www.amsoil.com/shop/by-product/m.../?code=DEOQT-EA

Last edited by mmohr; 12/02/17 02:03 PM.
Re: 2004 Rubicon Oil [Re: mmohr] #4592254
12/02/17 05:59 PM
12/02/17 05:59 PM
Joined: Jul 2006
Posts: 118
ohio
fins Offline
fins  Offline
Joined: Jul 2006
Posts: 118
ohio

I have a 2005 Rubi .....for many years I ran 15w-40 Rotella about 2 years ago I switched to a 5w-30 synthetic.

I change oil every 5k or which is about once a year.

Re: 2004 Rubicon Oil [Re: fins] #4592306
12/02/17 07:18 PM
12/02/17 07:18 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Why are you guys recommending a diesel oil for a gasoline Jeep engine ?
A diesel oil will have soot dispersants that aren't required for this application.

Re: 2004 Rubicon Oil [Re: mmohr] #4592373
12/02/17 08:30 PM
12/02/17 08:30 PM
Joined: Jun 2011
Posts: 1,755
Crawfordville FL
SilverFusion2010 Offline
SilverFusion2010  Offline
Joined: Jun 2011
Posts: 1,755
Crawfordville FL
A 10w-40 SN

I'd use M1 HM 10w-40 or M1 0w-40


2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30
Re: 2004 Rubicon Oil [Re: mmohr] #4592631
12/03/17 04:52 AM
12/03/17 04:52 AM
Joined: Mar 2016
Posts: 980
MT
jongies3 Offline
jongies3  Offline
Joined: Mar 2016
Posts: 980
MT
If you're only getting 3k a year why are you wasting money on synthetic? I'd stick either regular Delvac or Rotella 15W-40 in there and change it yearly if it were me. Doesn't the 4.0 still run off a tappet cam instead of a roller? If so, it'll appreciate the extra zinc in the HDEO's over the Amsoil for better wear characteristics. I use Rotella 15W-40 in all my old tappet engines and they love it.

Last edited by jongies3; 12/03/17 04:52 AM.

2004 Toyota Tacoma 3.4 V6: Mobil 1 AFE 0W-30, FRAM TG-3600 filter
1969 Mustang Mach 1 5.8 V8: PYB 10W-30 Napa Gold 1515 filter
1997 Ford F-250 HD 7.3 Powerstroke V8: T6 5W-40 FRAM PH-3786 filter
Re: 2004 Rubicon Oil [Re: mmohr] #4592664
12/03/17 06:50 AM
12/03/17 06:50 AM
Joined: Sep 2010
Posts: 2,022
GA.
ChrisD46 Offline
ChrisD46  Offline
Joined: Sep 2010
Posts: 2,022
GA.
0W40 Castrol Edge is great in a 4.0L Rubicon - but maintaining my son's jeep at 10K mile OCI's .


2017 Hyundai Sonata 2.4L GDI 4 cylinder
2010 Hyundai Elantra 2.0L 4 cylinder
2007 Kia Sedona 3.8L 6 cylinder
Re: 2004 Rubicon Oil [Re: mmohr] #4592775
12/03/17 09:25 AM
12/03/17 09:25 AM
Joined: Sep 2013
Posts: 10,439
Indiana
dlundblad Offline
dlundblad  Offline
Joined: Sep 2013
Posts: 10,439
Indiana
I guess my post didn't originally go through.

I like Edge 10w40, but I try to buy it on sale.

My Jeep seems to run quieter on 10w40's. Haven't tried a 15w40, but I will soon.


03 Jeep WJ 4.0 200k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 149k Rotella T5 10w30 Supertech ST3980

Re: 2004 Rubicon Oil [Re: Merkava_4] #4592802
12/03/17 09:51 AM
12/03/17 09:51 AM
Joined: Mar 2008
Posts: 5,839
South Florida
bubbatime Offline
bubbatime  Offline
Joined: Mar 2008
Posts: 5,839
South Florida
Originally Posted By: Merkava_4
Why are you guys recommending a diesel oil for a gasoline Jeep engine ?
A diesel oil will have soot dispersants that aren't required for this application.


17000 post and still clueless.


17 Chrysler Pacifica Mobil 1 5W30
13 Yamaha XT250 Valv MC 10W40
12 Suzuki S40 Rotella 15W40
10 Acura TSX 2.4 PZL Plat 5W30
06 GMC Sierra Nextgen 10W30


Re: 2004 Rubicon Oil [Re: mmohr] #4592900
12/03/17 11:15 AM
12/03/17 11:15 AM
Joined: Apr 2017
Posts: 100
Michigan
Building3 Offline
Building3  Offline
Joined: Apr 2017
Posts: 100
Michigan
I am in the same situation as you. 2003 Rubicon with about 3,000 miles a year. I drive it mostly in the winter when the roads are bad and not yet plowed. It is garage kept. It has had Pennzoil since day one. The first seven years when it had the factory warranty the dealer put in the yellow bottle 10w-30. Now I change the oil and filter myself with Pennzoil Ultra Platinum 10w-30. I use the Mopar oil filter. The owner's manual specified 10w-30 so that is what I have used. The oil analysis has been excellent. The powertrain has never had a repair. As a matter of fact, in 14+ years it has only had two repairs of any kind: a rear track bar was replaced (damaged in off-roading) and the passenger front seat belt retractor recliner failed. It has been a great vehicle to own.

Re: 2004 Rubicon Oil [Re: bubbatime] #4593044
12/03/17 02:23 PM
12/03/17 02:23 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Originally Posted By: bubbatime
17000 post and still clueless.


Since I have more than one post, it's posts, not "post." Now you tell me who's clueless.

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