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High grade oil 6k interval vs mid grade and 3k #4700408
03/20/18 07:27 AM
03/20/18 07:27 AM
Joined: Mar 2018
Posts: 11
Missouri
Viking1313 Offline OP
Viking1313  Offline OP

Joined: Mar 2018
Posts: 11
Missouri
I have 08 wrangler, I check my oil every time I fuel up and I've been seeing dark oil about halfway through oil changes, I've been using mobile 1 full synthetic and changing @ 6k miles intervals, ive been considering going cheap and using supertech full synthetic since it's cheaper and changing my oil at the 3k interval, which do you guys think would be healthier for my motor? These jeeps are known for oil consumption and mine is no stranger to it.

Re: High grade oil 6k interval vs mid grade and 3k [Re: Viking1313] #4700410
03/20/18 07:29 AM
03/20/18 07:29 AM
Joined: Dec 2013
Posts: 2,099
socal
barkingspider Offline
barkingspider  Offline

Joined: Dec 2013
Posts: 2,099
socal
You can change ST syn at 5k miles and save even more


06 Cadillac Escalade Ext
17 Cadillac ATS (wife)
05 Toyota Camry (daughter)
11 GMC Canyon off-road (daily)
Re: High grade oil 6k interval vs mid grade and 3k [Re: Viking1313] #4700411
03/20/18 07:33 AM
03/20/18 07:33 AM
Joined: Dec 2011
Posts: 5,652
North Carolina
rooflessVW Online content
rooflessVW  Online Content

Joined: Dec 2011
Posts: 5,652
North Carolina
I'd sooner go to a conventional and change at 5k miles.


"Zed's dead baby, Zed's dead."
Re: High grade oil 6k interval vs mid grade and 3k [Re: Viking1313] #4700413
03/20/18 07:35 AM
03/20/18 07:35 AM
Joined: Nov 2011
Posts: 5,057
MTL, CANADA
Rolla07 Offline
Rolla07  Offline

Joined: Nov 2011
Posts: 5,057
MTL, CANADA
You cant judge an oil by its colour. Black oil doesnt necessarily mean dirty oil. I would follow the recommendation in your owners manual for when to change it and use whichever synthetic oil you want for that interval. If concerned, maybe send in your oil for a n analysis.


2007 Corolla Red Pearl 155k miles
PP 0w20 & ST 4967

Re: High grade oil 6k interval vs mid grade and 3k [Re: Viking1313] #4700420
03/20/18 07:51 AM
03/20/18 07:51 AM
Joined: Jan 2009
Posts: 14,127
Illinois
tig1 Offline
tig1  Offline

Joined: Jan 2009
Posts: 14,127
Illinois
With M1 oils I have been doing 10K OCIs for the last 4 decades.


2007 Ford Fusion 239,000 miles
M1 0-20 EP
2017 Ford Fusion 67K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and Valvoline LV
M1 10-30 in all OPE
MC filters

Re: High grade oil 6k interval vs mid grade and 3k [Re: Rolla07] #4700428
03/20/18 07:59 AM
03/20/18 07:59 AM
Joined: Mar 2018
Posts: 11
Missouri
Viking1313 Offline OP
Viking1313  Offline OP

Joined: Mar 2018
Posts: 11
Missouri
I actually ordered a oil test kit, I'm going to send it in for analysis asap.

I actually take my jeep down alot of dusty trails and roads, that can't be helping.

Re: High grade oil 6k interval vs mid grade and 3k [Re: Viking1313] #4700432
03/20/18 08:01 AM
03/20/18 08:01 AM
Joined: Oct 2008
Posts: 877
MA USA
andrewp1998 Offline
andrewp1998  Offline

Joined: Oct 2008
Posts: 877
MA USA
5k syn and check manual for severe service!


2001 Honda civic HX vtecE- 5 spd,238K
Re: High grade oil 6k interval vs mid grade and 3k [Re: Viking1313] #4700433
03/20/18 08:03 AM
03/20/18 08:03 AM
Joined: Apr 2016
Posts: 1,202
Campbellsville, KY
Alex_V Offline
Alex_V  Offline

Joined: Apr 2016
Posts: 1,202
Campbellsville, KY
Dark oil by 3K isn't a big deal. If you do anything more than straight city/stop and go driving I'd keep doing what you're doing. The 3.8 may burn oil by no fault of the owner, but they'll hold up.


To quote a friend, "Synthetics, man."

'85 GMC C3500, 454, 132K
'82 Mercedes 300CD, OM617 turbo, 173K (totaled 2018, in rehab)
'85 Mercedes 300TD, OM617 turbo, 217K (wife's)
'67 Suburban, 350, 331K
Re: High grade oil 6k interval vs mid grade and 3k [Re: Viking1313] #4700479
03/20/18 09:11 AM
03/20/18 09:11 AM
Joined: Sep 2014
Posts: 1,563
Toronto Canada
WobblyElvis Online content
WobblyElvis  Online Content

Joined: Sep 2014
Posts: 1,563
Toronto Canada
Unless you are doing a lot of stop and go driving.
or you drive less than 10,000 miles/year

My opinion is you are changing oil to often.
I would go 9,000 miles on any synthetic.

Your engine uses oil. Check the level often and keep it topped up.
Works for me.

Re: High grade oil 6k interval vs mid grade and 3k [Re: Viking1313] #4700495
03/20/18 09:30 AM
03/20/18 09:30 AM
Joined: Oct 2015
Posts: 2,931
Balearic Islands , Spain
FordCapriDriver Online content
FordCapriDriver  Online Content

Joined: Oct 2015
Posts: 2,931
Balearic Islands , Spain
Don't change it based on the colour and follow your owner's manual, and the intervals it suggests.


1975 Ford Capri II Ghia 3000 V6, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO.
1988 Ford Escort XR3i Cabrio, - Shell Rimula R4X 15W-40, w/ 30% Helix 3 20W-50.


Re: High grade oil 6k interval vs mid grade and 3k [Re: Viking1313] #4700502
03/20/18 09:38 AM
03/20/18 09:38 AM
Joined: Feb 2011
Posts: 7,133
Hudson, NH
LeakySeals Offline
LeakySeals  Offline

Joined: Feb 2011
Posts: 7,133
Hudson, NH
Familiar with that engine. 6-7k seems to be the sweet spot with syn, 4-5k with conventional. The consumption has supposedly been fixed in recent years. A thicker Mobil 1 might help. Will still flow good. If cost is an issue, sure try the supertech syn. Regardless, its a modern engine with modern oil. The 3k oil change no longer applies. As far as the color, Mobil 1 has superior cleaning and suspension properties to most other oils. Why it turns brown sooner than other oils. All the crud created by the engine over the course of an oil change remains suspended, pours right out with the oil change. Rather than falling onto or sticking to the engine surface as varnish or sludge. Some people confuse that suspension color with "spent oil" Nope, its fine. I would be more concerned with oil that looks clear for 5k. Where's all that suspended carbon and crud if its not in the oil? It fell out of suspension and settled all over the engine in different places, why the oil still looks clean.


06 Escalade 6.0L LQ9 AWD 165k M1 0w40
03 Maxima 3.5L POS 162k ST HM 10w30
05 Malibu Classic 108k Unk
Re: High grade oil 6k interval vs mid grade and 3k [Re: barkingspider] #4700577
03/20/18 11:15 AM
03/20/18 11:15 AM
Joined: Dec 2017
Posts: 1,741
US
JLTD Online shocked
JLTD  Online Shocked

Joined: Dec 2017
Posts: 1,741
US
Originally Posted By: barkingspider
You can change ST syn at 5k miles and save even more


Agreed! There have been a couple of UOAs done on vehicles at that distance with SY Syn and they've been good...and probably could have gone to 6k easy.


I use the overseas owner's manual to choose my oil.

Using AMSOIL

Hers: 2008 Jeep Liberty 143k, SS 5w30/Amsoil

His: 2015 4Runner 51k, OE 5w30/Wix

Re: High grade oil 6k interval vs mid grade and 3k [Re: JLTD] #4700585
03/20/18 11:22 AM
03/20/18 11:22 AM
Joined: May 2007
Posts: 7,810
Indianapolis, IN
dnewton3 Offline
Global Moderator
dnewton3  Offline
Global Moderator

Joined: May 2007
Posts: 7,810
Indianapolis, IN
Originally Posted By: JLTD
Originally Posted By: barkingspider
You can change ST syn at 5k miles and save even more


Agreed! There have been a couple of UOAs done on vehicles at that distance with SY Syn and they've been good...and probably could have gone to 6k easy.


I've gone 3x that 5k distance on ST dino. Also done 10k on RK dino.

I realize the OP may not be inclined to do that, but 3k miles on a syn is a HORRENDOUS waste; even at 5k its a waste.

Wake up and smell the new world of lubes available today. wink


Last edited by dnewton3; 03/20/18 11:23 AM.

The act of preventative maintenance, in and of itself, is FAR MORE important than brand/grade/base choices among lubes and filters.
- under maintaining something is akin to abuse/neglect; that can kill equipment by shortening the lifespan
- over maintaining something has never been proven to be anything but a waste of time and money
Re: High grade oil 6k interval vs mid grade and 3k [Re: Viking1313] #4700626
03/20/18 12:09 PM
03/20/18 12:09 PM
Joined: Jan 2009
Posts: 6,800
New England
gathermewool Offline
gathermewool  Offline

Joined: Jan 2009
Posts: 6,800
New England
How much oil consumption?

What's your driving pattern?

Without this info, no advice can be given. Without a UOA, even the advice we give is best guess. With your driving pattern, rate of consumption AND a UOA we can give you an educated recommendation, but even it would not be 100% spot on.

What I'm saying, in other words, is that on a scale of 1 to 10 for how good our advice will be, you're at a 2. The best we can do is about an 8 (my own made up scale, so it is obviously irrefutable!) liar


'14 Forester XT FA20DIT (Cobb Stage 1)
Edge 0W-40 + FU filter (64,774 miles)
'15 Legacy FB25 (OEM Stage, uh, neg. 7?)
Edge 0W-20 + FU filter (40,803 miles)
Re: High grade oil 6k interval vs mid grade and 3k [Re: gathermewool] #4700717
03/20/18 01:39 PM
03/20/18 01:39 PM
Joined: Mar 2018
Posts: 11
Missouri
Viking1313 Offline OP
Viking1313  Offline OP

Joined: Mar 2018
Posts: 11
Missouri
Originally Posted By: gathermewool
How much oil consumption?

What's your driving pattern?

Without this info, no advice can be given. Without a UOA, even the advice we give is best guess. With your driving pattern, rate of consumption AND a UOA we can give you an educated recommendation, but even it would not be 100% spot on.

What I'm saying, in other words, is that on a scale of 1 to 10 for how good our advice will be, you're at a 2. The best we can do is about an 8 (my own made up scale, so it is obviously irrefutable!) liar



I'm probably using +/- 1 to 2 quarts between changes. I usually drive this jeep on and around base, and hunting (mostly off-road or on [censored] dirt roads) I sometimes do drive it long distance, but not so much lately.

It spends it's life undeniably dirty.

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