2009 Duramax Rotella T6 5W40

[shrek01GT]

Time on Unit - 26,300 kms
Time on Oil - 5,990 kms

Iron - 12
Chromium - Lead - Copper - 2
Tin - Aluminium - Nickel - Silver - Titanium - Vanadium -
Silicon - 6
Sodium - 9
Potassium - 9
Water - Coolant - No

Magnesium - 809
Calcium - 689
Barium - Phosphorus - 1343
Zinc - 1352
Molybdenum - 69
Boron - 40

Viscosity (cst 100C) - 14.1
Fuel % - Soot % - 0.2

 

[Quattro Pete]

Seems to have held up very well. Then again, it's only 4k miles, so I wouldn't expect anything else.

What are the typical operating conditions?

 

[wapacz]

was this by the olm?

 

[Jim 5]

Is your DFP still installed?

 

[dnewton3]

Any heavy towing? Only reason I ask is that 12ppm Fe in 6k km seems ok, but not stellar, for a Dmax. All the other stuff is fine.

Please tell us you left it in and only sampled. To OCI at that duration is nuts.

 

[shrek01GT]

Operating conditions would be considered extensive idling and short trips. DFP is still installed and truck would be considered "stock". Oil was changed only because I sell the stuff and I like changing oil! Next time will be an 8000km OCI. OLM read 67%

 

[dnewton3]

Long idles and short trips could be the contribution to the Fe.

Still, to OCI at such as short interval seems a shame for such a competent oil. Nothing wrong with tinkering in the garage, but unless you're getting the stuff for less $ than dino fluids, it seems a bit of a waste.

Overall, for most applications, the OLM in the Dmax trucks seems fairly accurate. Never 100% correct on all vehicles, but certainly there is some evidence to show reasonable correlation between the OLM and UOA performance with TBN.

 

[chevrofreak]

Looks to me like they cured the shearing problem.

 

[D-Roc]

Nice ZDDP numbers.

 

[daman]

whats taking place of the Calcium Phosphorus???..

 

[JAG]

Magnesium-based detergents are picking up the slack for the reduced calcium-based detergents. Phosphorus is from ZDDP which does NOT function as a detergent.

 

[daman]

Originally Posted By: JAG
Magnesium-based detergents are picking up the slack for the reduced calcium-based detergents. Phosphorus is from ZDDP which does NOT function as a detergent.

right right yup thanks

 

[dsmith41]

How can the stuff still carry an SM rating with that much zinc and phosphorus? Wow!

 

[BobFout]

Originally Posted By: dsmith41
How can the stuff still carry an SM rating with that much zinc and phosphorus? Wow!


IIRC SM doesn't limit ZDDP, it's SM GF-4 that does.

 

[rallydiesel]

Who did the UOA?

 

[shrek01GT]

ALS Laboratory Group out of Edmonton

 

[Johnny]

Originally Posted By: shrek01GT
Oil was changed only because I sell the stuff and I like changing oil! Next time will be an 8000km OCI. OLM read 67%


I take it you work for a jobber/distributor in Canada. What other brands do you represent?

 

[Steve S]

Its cold in Alberta.

 

[rallydiesel]

T6 is wonderous.

 

[shrek01GT]

Jonny, just Shell and Chevron