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#4403418 - 05/12/17 10:10 PM CK-4 RT6: What have they done?
A_Harman Offline


Registered: 10/01/10
Posts: 6921
Loc: Michigan
I'll tell you what they've done. They've taken an oil I've run successfully for years, and turned it into some kind of a wimpy near-beer.

From Polaris Laboratories:
KV100: 14.6 cSt
TAN: 2.68
Silicon: 5 ppm
Sodium: 3
Potassium: 2
Titanium: 1
Boron: 186
Magnesium: 80
Calcium: 1978
Phosphorous: 944
Zinc: 1109

These are all the metals that were present. Where is Moly?
The zddp content has really dropped off.
Magnesium is almost gone, compared to the previous formulation.
This doesn't look like a long life oil anymore.

I think I need to start considering alternatives.





Edited by A_Harman (05/12/17 10:12 PM)
_________________________
1985 Z51 Corvette track car
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel
1972 GMC 1500 shortbed project truck

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#4403425 - 05/12/17 10:21 PM Re: CK-4 RT6: What have they done? [Re: A_Harman]
Reddy45 Offline


Registered: 08/15/08
Posts: 2967
Loc: USA
It's not surprising right? Environmentally friendly has somehow beat superior protection, and we have to live with the results of this policy.

Is the batch you test dual rated for gas engines and SN? Or still SM?

And is there a way you can change the title so it says "Roellta T6" instead of RT6? (for future search purposes -- we don't all know the same acronyms)

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#4403427 - 05/12/17 10:22 PM Re: CK-4 RT6: What have they done? [Re: A_Harman]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4851
Loc: Houston, Texas
I don't think rotella ever moly. Delo has moly. The boron makes up for the lack of zddp.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4403428 - 05/12/17 10:24 PM Re: CK-4 RT6: What have they done? [Re: A_Harman]
beanoil Offline


Registered: 10/17/04
Posts: 2952
Loc: Midwest, Illinois
Before anyone else parrots the nonsense...
"There are things that don't show up in an oil analysis."
I agree with A_Harman. CK-4's look weak, and whether or not things show in an analysis or not, what we have judged by for a long time is long gone.
I must have missed the "Save the DPF's" flyers somewhere....


Edited by beanoil (05/12/17 10:24 PM)
_________________________
beanoil: Tough under heat, real dirty afterwards.

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#4403430 - 05/12/17 10:26 PM Re: CK-4 RT6: What have they done? [Re: beanoil]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4851
Loc: Houston, Texas
Originally Posted By: beanoil
Before anyone else parrots the nonsense...
"There are things that don't show up in an oil analysis."
I agree with A_Harman. CK-4's look weak, and whether or not things show in an analysis or not, what we have judged by for a long time is long gone.
I must have missed the "Save the DPF's" flyers somewhere....


So can you just spike the oil with a good zddp additive? Or is that not the same?
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4403431 - 05/12/17 10:27 PM Re: CK-4 RT6: What have they done? [Re: A_Harman]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4851
Loc: Houston, Texas
That's what i'll start doing I guess.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4403433 - 05/12/17 10:29 PM Re: CK-4 RT6: What have they done? [Re: A_Harman]
claluja Offline


Registered: 02/05/16
Posts: 254
Loc: MD
Yep weak. Still p!sses me off how they snuck this new CK4 in their CJ4 bottles for months knowing that Ford was telling their diesel customers not to use the CK4. I was a loyal RT6 guy - never again.


Edited by claluja (05/12/17 10:29 PM)
_________________________
2014 F250 6.7L PSD
2006 Sequoia 4.7L
2005 E500 5.0L
1997 4Runner 3.4L

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#4403440 - 05/12/17 10:39 PM Re: CK-4 RT6: What have they done? [Re: A_Harman]
JHZR2 Offline



Registered: 12/14/02
Posts: 41779
Loc: New Jersey
OP, where is your objective evidence to substantiate your claims that it is not a long life oil, or that it won't protect as well? If it is meant to be environmentally friendly, if anything, it will be a longer life oil. I don't see any current specs being less stringent than older ones...

I get it if you have some older vehicles, the zddp and flat tappet cam issue may be a concern...

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#4403449 - 05/12/17 10:47 PM Re: CK-4 RT6: What have they done? [Re: JHZR2]
A_Harman Offline


Registered: 10/01/10
Posts: 6921
Loc: Michigan
Originally Posted By: JHZR2
OP, where is your objective evidence to substantiate your claims that it is not a long life oil, or that it won't protect as well? If it is meant to be environmentally friendly, if anything, it will be a longer life oil. I don't see any current specs being less stringent than older ones...

I get it if you have some older vehicles, the zddp and flat tappet cam issue may be a concern...


Cummins B-series engine has a flat-tappet cam.
_________________________
1985 Z51 Corvette track car
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel
1972 GMC 1500 shortbed project truck

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#4403477 - 05/13/17 01:18 AM Re: CK-4 RT6: What have they done? [Re: A_Harman]
Olas Offline


Registered: 12/11/13
Posts: 3933
Loc: Manchester, England
redline does all the protecting any engine will ever need.
_________________________
Cable ties should hold it

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#4403483 - 05/13/17 02:20 AM Re: CK-4 RT6: What have they done? [Re: A_Harman]
czbrian Offline


Registered: 04/10/15
Posts: 154
Loc: Houston, TX
Originally Posted By: A_Harman
I'll tell you what they've done. They've taken an oil I've run successfully for years, and turned it into some kind of a wimpy near-beer.

These are all the metals that were present. Where is Moly?
The zddp content has really dropped off.
Magnesium is almost gone, compared to the previous formulation.
This doesn't look like a long life oil anymore.

I think I need to start considering alternatives.


I dont understand why you are complaining. In the UOA you posted your wear metals are lower than previous samples. Other than a slightly lower TBN, the oil is working just fine.

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#4403524 - 05/13/17 05:51 AM Re: CK-4 RT6: What have they done? [Re: A_Harman]
yvon_la Offline


Registered: 05/20/14
Posts: 1429
Loc: quebec canada
Plating an engine only work if wire touch (main ground isn't enough to achieve this. Yes oil maker had to reformulate. We all see how oil do from now on with all electrical wire air gaped
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Truck driver
Nissan versa note s 2014 total classic 5w30(qc.ca) drivework oil filter

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#4403525 - 05/13/17 05:52 AM Re: CK-4 RT6: What have they done? [Re: czbrian]
Ducked Online   content


Registered: 10/25/12
Posts: 4353
Loc: Taiwan
Originally Posted By: czbrian
Originally Posted By: A_Harman
I'll tell you what they've done. They've taken an oil I've run successfully for years, and turned it into some kind of a wimpy near-beer.

These are all the metals that were present. Where is Moly?
The zddp content has really dropped off.
Magnesium is almost gone, compared to the previous formulation.
This doesn't look like a long life oil anymore.

I think I need to start considering alternatives.




I dont understand why you are complaining. In the UOA you posted your wear metals are lower than previous samples. Other than a slightly lower TBN, the oil is working just fine.


Didn't we all agree never to mention UOA metals as valid indicators of wear ever again?...I could have sworn....

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#4403539 - 05/13/17 06:25 AM Re: CK-4 RT6: What have they done? [Re: yvon_la]
Ducked Online   content


Registered: 10/25/12
Posts: 4353
Loc: Taiwan
Originally Posted By: yvon_la
Plating an engine only work if wire touch (main ground isn't enough to achieve this. Yes oil maker had to reformulate. We all see how oil do from now on with all electrical wire air gaped



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#4403545 - 05/13/17 06:43 AM Re: CK-4 RT6: What have they done? [Re: czbrian]
claluja Offline


Registered: 02/05/16
Posts: 254
Loc: MD
Originally Posted By: czbrian
I dont understand why you are complaining. In the UOA you posted your wear metals are lower than previous samples. Other than a slightly lower TBN, the oil is working just fine.


Note the difference in P and Zn, between the UOA and this VOA.
_________________________
2014 F250 6.7L PSD
2006 Sequoia 4.7L
2005 E500 5.0L
1997 4Runner 3.4L

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