Oil sample

[SHobbs]

Oil life monitor was at 14% so I changed it with 8650 miles on the oil, no oil was added. I never liked running it down any further. Not too computer savy and I didn't want to copy and paste the PDF and put my email and phone number out there.
Kendall GT-1 Full Synthetic Euro 5W-30
Currently have over 36k miles on the truck.
This first sample from your Ram looks really good. All wear read right around universal averages,
which is impressive because you ran your oil longer than average. Averages are based on 6,500 miles on
the oil. The only mark on the whole page was for the viscosity. It's not off by much - certainly not high
enough to be a problem. Slight viscosity shifts are normal and only rarely does it signal a problem. No
harmful contaminants were found and the TBN read strong at 4.7. This engine looks great! No problems
found.
Universal averages were the same for these.
Aluminum 6
Chromium 1
Iron 25
Copper 3
Lead 1
Moly 8
Titanium 4
Potassium 14
Boron 6
Silicon 6
Sodium 3
Calcium 1752
Magnesium 130
Phosphorous 742
Zinc 863

SUS Viscosity @ 210F* 66.9 Universal 57-65
cSt Viscosity@ 100*C 12.13 Universal 9.4- 11.9
Flashpoint in F* 425 Universal > 410
Fuel % < 0.5 Universal < 2.0
Insolubles 0.3 Universal < 0.6
TBN 4,7

 

[Tuesdak]

Soot?

Viscosity shifts like jumping to a thicker grade mean one factor of the oil is worn out. So you are getting your money's worth out of the oil. IMO I would run a better oil (This Kendall oil is a Group III bottom of the general marketing fraud of the word synthetic) seeing this has nearly reached 40 wt from 30 wt. The lab will change their tune if you jump grades to 40... Just not much of a safety margin left for the miles being run. Unless this is as hard as you will ever run the truck then you clearly have oil doing it's job with not much of a margin left. That would make a fleet manager proud.

 

[TDRGuy]

Good to know. Thank you for the data.

I'll likely change to the commercially easy-to-find (and way less expensive) Rotella oils after my EcoDiesel is beyond the warranty period and I become the warranty station.

Rp

 

[SHobbs]

That is as far as I will push it. I have been changing the oil when it hits 15% on the oil life meter. I don't do any heavy towing maybe just a small trailer with an ATV on it from time to time.