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#4484864 - 08/10/17 03:47 PM CK-4 vs CJ-4
mbacfp Offline


Registered: 09/02/15
Posts: 837
Loc: California
Is the chemistry on CK-4 oil better than CJ-4? I am assuming there are other compounds to make up for lowered Phosphorus, Zinc, etc. Someone perhaps thought adding some Redline engine break-in additive to boost those levels (I am not considering that myself). Was just curious if it is that simple or is the chemistry behind the two (CK-4 and CJ-4) night and day different? Appreciate it.
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2014 F-550 PSD..........M1 Delvac ESP 5w-40 + OEM
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2003 Dodge Durango R/T 4x4 5.9L V8

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#4484976 - 08/10/17 06:07 PM Re: CK-4 vs CJ-4 [Re: mbacfp]
ArcticDriver Offline


Registered: 01/27/17
Posts: 1139
Loc: USA
This is a great question and I have yet to see an explanation of what makes CK-4 a better product.

I respect the various wear test results but I wish the chemistry would be explained.
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#4485034 - 08/10/17 06:58 PM Re: CK-4 vs CJ-4 [Re: mbacfp]
bubbatime Offline


Registered: 03/18/08
Posts: 5627
Loc: South Florida
Here is what Shell and Chevron have to say:

http://rotella.shell.com/products/pc-11....mp;gclsrc=aw.ds

http://www.deloperformance.com/en-us/pc-...us-PC-11-videos


And to make things more confusing, Rotella has REMOVED the gas SN ratings from most of their bottles. As such, it appears that Rotella is still a very stout oil, while some of of the others (like Delo) now seem watered down.

I'm really likening the new Rotella. The new dual rated oils, not so much.
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#4485035 - 08/10/17 06:58 PM Re: CK-4 vs CJ-4 [Re: mbacfp]
krismoriah72 Offline


Registered: 02/16/09
Posts: 1519
Loc: wv
Comparing Rotella it looks like a higher TBN and slightly better add pack for the new CK-4.

http://www.pqiamerica.com/May%202013/rotella.htm
http://pqiadata.org/Shell_Rotella_T4_15W40_4192017.html


CJ-4 TBN- 9.4 Calcium 2321 Phosphorus 965 Zinc 1098 Boron 37

CK-4 TBN- 10.27 Calcium 2295 Phosphorus 1080 Zinc 1203 Boron 207

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#4485098 - 08/10/17 08:05 PM Re: CK-4 vs CJ-4 [Re: mbacfp]
mbacfp Offline


Registered: 09/02/15
Posts: 837
Loc: California
Thanks to all. Appreciate the links and VOAs. Night.
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2014 F-550 PSD..........M1 Delvac ESP 5w-40 + OEM
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2012 Toyota Sienna LTD 3.5L V6
2003 Dodge Durango R/T 4x4 5.9L V8

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#4485134 - 08/10/17 08:40 PM Re: CK-4 vs CJ-4 [Re: mbacfp]
dblshock Offline


Registered: 04/24/07
Posts: 2655
Loc: WI.
but some are low SASP content.
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#4485167 - 08/10/17 09:22 PM Re: CK-4 vs CJ-4 [Re: krismoriah72]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: krismoriah72
Comparing Rotella it looks like a higher TBN and slightly better add pack for the new CK-4.

http://www.pqiamerica.com/May%202013/rotella.htm
http://pqiadata.org/Shell_Rotella_T4_15W40_4192017.html


CJ-4 TBN- 9.4 Calcium 2321 Phosphorus 965 Zinc 1098 Boron 37

CK-4 TBN- 10.27 Calcium 2295 Phosphorus 1080 Zinc 1203 Boron 207


SWEET!
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"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4485170 - 08/10/17 09:24 PM Re: CK-4 vs CJ-4 [Re: dblshock]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: dblshock
but some are low SASP content.


SAPS stands for sulfated ash, phosphorus and sulfur.

Looks like the Rotella kept a decent level of phosphorus.
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"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4485190 - 08/10/17 09:46 PM Re: CK-4 vs CJ-4 [Re: Linctex]
2015_PSD Offline


Registered: 09/26/10
Posts: 7237
Loc: SE Texas
Originally Posted By: Linctex
Originally Posted By: dblshock
but some are low SASP content.


SAPS stands for sulfated ash, phosphorus and sulfur.

Looks like the Rotella kept a decent level of phosphorus.
Only the 15W-40 flavor if I remember correctly. The 5W-40 and 10W-30 versions are less than 1000ppm phosphorus.
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#4485216 - 08/10/17 10:31 PM Re: CK-4 vs CJ-4 [Re: mbacfp]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4858
Loc: Houston, Texas
I was going to run rotella but couldn't find it at walmart, so just got the delo ck4 one thing I noticed when changing the oil was that it didn't burn a drop compared to the cj4. Normally I'd be about 1.5qts low.
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#4485288 - 08/11/17 12:20 AM Re: CK-4 vs CJ-4 [Re: mbacfp]
NattyBoh Offline


Registered: 10/26/09
Posts: 429
Loc: Balto, MD
Yeah we need to know the 5w40 info.

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#4485304 - 08/11/17 01:52 AM Re: CK-4 vs CJ-4 [Re: motor_oil_madman]
Neely97 Offline


Registered: 06/13/06
Posts: 370
Loc: Texas
The ck4 Delo reduced the zinc so much I will stop using it in the Cummins .
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#4485312 - 08/11/17 02:58 AM Re: CK-4 vs CJ-4 [Re: dblshock]
Garak Offline


Registered: 12/05/09
Posts: 24600
Loc: Regina, Saskatchewan, Canada
Originally Posted By: dblshock
but some are low SASP content.

CJ-4 and CK-4 are both low SAPS, by ACEA E sequence definitions. They all already had a SA of 1.0 or less for years.
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Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, NAPA Gold 7356
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#4485836 - 08/11/17 03:07 PM Re: CK-4 vs CJ-4 [Re: Neely97]
Bighorn2500 Offline


Registered: 05/24/16
Posts: 313
Loc: Michigan, USA
Originally Posted By: Neely97
The ck4 Delo reduced the zinc so much I will stop using it in the Cummins .


Same here, waiting for the dust to settle and see some more "CK-4" VOA's to help decide which still has a strong add pack. There will be no "CK-4/SN" going in my Cummins.

I know Schaffer changed the status of there 7000 15w40 diesel to "race engine oil" and kept the Z & P ppm still very high which may be an option. Although the 9000 5w40 diesel went CK-4, waiting to see a VOA to see what may have changed.
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#4485881 - 08/11/17 04:18 PM Re: CK-4 vs CJ-4 [Re: mbacfp]
NattyBoh Offline


Registered: 10/26/09
Posts: 429
Loc: Balto, MD
It amazes me that boutique oil producers are still going to ck-4 ans not keeping both. I believe they will still sell the cj-4 oila

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