Here's the two oil reports I have done on my new-ish Duramax. The 1st number is the 1st report, the 2nd number is the 2nd report. The last number in parenthesis is the universal average.
Both these OCI's done when the truck said to. Recent change and sample taken good and hot after a full days driving. The engine completed a regen in the morning, then we drove it all day, 150 miles round trip to Mt Rainier. Lots of stops and slow windy roads.
Code:
Oil … Mobil 1 TDT 5W/40, Mobil 1 Oil Filter
Miles in Use … 10,000, 8 Months … 6,5OO, 8 Months
Miles on Unit … 25,500 … 47,400
Sample Taken … 6/10/2009 … 8/17/2011
Make up Oil … 0 … 0
Aluminum ... 3 … 2 … (2)
Chromium … 1 … 1 … (0)
Iron … 23 … 19 … (12)
Copper … 32 … 4 … (10)
Lead … 3 … 3 … (3)
Tin … 2 … 0 … (1)
Molybdenum … 12 … 1 … (29)
Nickel … 0 … 0 … (0)
Manganese … 1 … 0 … (0)
Silver … 0 … 0 … (0)
Titanium … 0 … 0 … (0)
Potassium … 14 … 0 … (3)
Boron … 42 … 42 … (48)
Silicon … 9 … 8 … (9)
Sodium … 13 … 3 … (3)
Calcium … 1116 … 1209 … (2721)
Magnesium … 716 … 781 … (215)
Phosphorus … 839 … 909 … (1092)
Zinc … 1106 … 1003 … (1289)
Barium … 0 … 0 … (0)
Insolubles % … 0.4 … 0.2 … (< 0.6)
Water % … 0 … 0 … (0)
Antifreeze % … 0 … (0)
Fuel % … 1.5 … 4.0 … (< 2.0)
Flashpoint ºF … 395 … 370 … (> 410)
SUS Viscosity @ 210ºF … 66.3 … 68.5 … (65-76)
cSt Viscosity @ 100ºC … 11.96 … 12.56 … (11.6-14.8)
TBN … 4.3 … 5.4
Blackstone's comments:
Quote:
We haven't seen your Duramax in quite some time, but even after almost 24,00 miles this 6.6L looks good in analysis. Wear metals read around universal averages, which are based on ~6,600 miles. Copper improved to a better-than-average reading since your last sample, showing minimal wear at brass/bronze parts. We did note fuel at 4.0% which is a problem reading. It didn't affect wear or the viscosity, but it's still a cautionary level of fuel. The TBN was 5.4, showing lots of additive left. (A TBN of 1.0 is low). Check back to monitor fuel.
Both these OCI's done when the truck said to. Recent change and sample taken good and hot after a full days driving. The engine completed a regen in the morning, then we drove it all day, 150 miles round trip to Mt Rainier. Lots of stops and slow windy roads.
Code:
Oil … Mobil 1 TDT 5W/40, Mobil 1 Oil Filter
Miles in Use … 10,000, 8 Months … 6,5OO, 8 Months
Miles on Unit … 25,500 … 47,400
Sample Taken … 6/10/2009 … 8/17/2011
Make up Oil … 0 … 0
Aluminum ... 3 … 2 … (2)
Chromium … 1 … 1 … (0)
Iron … 23 … 19 … (12)
Copper … 32 … 4 … (10)
Lead … 3 … 3 … (3)
Tin … 2 … 0 … (1)
Molybdenum … 12 … 1 … (29)
Nickel … 0 … 0 … (0)
Manganese … 1 … 0 … (0)
Silver … 0 … 0 … (0)
Titanium … 0 … 0 … (0)
Potassium … 14 … 0 … (3)
Boron … 42 … 42 … (48)
Silicon … 9 … 8 … (9)
Sodium … 13 … 3 … (3)
Calcium … 1116 … 1209 … (2721)
Magnesium … 716 … 781 … (215)
Phosphorus … 839 … 909 … (1092)
Zinc … 1106 … 1003 … (1289)
Barium … 0 … 0 … (0)
Insolubles % … 0.4 … 0.2 … (< 0.6)
Water % … 0 … 0 … (0)
Antifreeze % … 0 … (0)
Fuel % … 1.5 … 4.0 … (< 2.0)
Flashpoint ºF … 395 … 370 … (> 410)
SUS Viscosity @ 210ºF … 66.3 … 68.5 … (65-76)
cSt Viscosity @ 100ºC … 11.96 … 12.56 … (11.6-14.8)
TBN … 4.3 … 5.4
Blackstone's comments:
Quote:
We haven't seen your Duramax in quite some time, but even after almost 24,00 miles this 6.6L looks good in analysis. Wear metals read around universal averages, which are based on ~6,600 miles. Copper improved to a better-than-average reading since your last sample, showing minimal wear at brass/bronze parts. We did note fuel at 4.0% which is a problem reading. It didn't affect wear or the viscosity, but it's still a cautionary level of fuel. The TBN was 5.4, showing lots of additive left. (A TBN of 1.0 is low). Check back to monitor fuel.
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