2004.5 Cummins - 22536 miles on 5w40 Schaeffers

[deeter16317]

245,136 miles
22,536 miles on oil

NO MAKEUP OIL
NO OIL LOST (LEVEL FULL in = LEVEL FULL out)
NO FILTER CHANGE (during this 22k run)

At least 25% was towing a a trailer between 5000 and 8500 pounds. Two trips between Columbus, GA and Pennsylvania were over 7000 each.

(All in PPM, unless otherwise noted)

CU - 16
FE - 39
CR - 1
AL - 7
PB - 6
MO - 303
P - 931
ZN - 1093
MG - 732
CA - 1128
NA - 8
K - 1
ANTIFREEZE - N%
FUEL - N%
H20 - 0.0%
SI - 5
VISC - 15.87 CST
SAE - 40
SULFUR - 9%
OXIDATION - 3%
NITRATION - 12%
SOOT - 0.9%

Schaeffers noted the oil to be normal and to extend the change to 25,500 miles.

Thoughts?

 

[A_Harman]

Did you get a number on final TBN? Did you do OA's at lower mile increments? Viscosity is above the maximum listed on the Supreme 9000 spec sheet.

Schaeffers is on my short list of oils to run in my Dodge on the next oil change. The M1 TDT is being consumed at about 1qt/1500 miles. 22k miles with no makeup oil is out of this world compared to that. And my engine only has 180k on it.

 

[deeter16317]

Schaeffer doesn't offer TBN as part of their analysis. You can see my other UOAs on this forum.

The increased viscosity is probably associated with the 0.9% soot load?? 15.87 CST compared to a reported 15.75 CST...that's probably within the analysis's range of error.

I was pleased overall with the results...considering the abuse I put the truck through during this UOA.

 

[A_Harman]

Do you have any power enhancements on your engine?

 

[The motor guy]

I Wonder how many hours are on this oil.

 

[The motor guy]

Copper and aluminum is getting up there.

 

[panthermike]

I don't think I'd sweat 16ppm copper and 7ppm aluminum for a 22.5K mile run.

 

[deeter16317]

Originally Posted By: motor_oil_madman
I Wonder how many hours are on this oil.



Assuming 55mph, over 400 hours...

 

[deeter16317]

Originally Posted By: A_Harman
Do you have any power enhancements on your engine?



40 horse injectors, MADS SmartyJR set on 70HP towing...

 

[deeter16317]

Originally Posted By: panthermike
I don't think I'd sweat 16ppm copper and 7ppm aluminum for a 22.5K mile run.



Copper is probably from the oil cooler...its a known thing that leaches.

 

[A_Harman]

Originally Posted By: deeter16317
Originally Posted By: A_Harman
Do you have any power enhancements on your engine?



40 horse injectors, MADS SmartyJR set on 70HP towing...


Interesting...

Considering the higher fueling, which should mean higher soot from combustion, the oil is doing remarkably well to get 22k miles. I see from your other posts that you have a bypass filter, so that must help.

 

[deeter16317]

But at the same time, the bypass had nothing in it and was still flowing a good volume of oil.