Group,
Just got back my first UOA from Blackstone and I am concerned with the wear metals, potassium, and silicon presence as noted.
Truck had 38,000 on it at the time of the sample. Oil had 6800 miles on it. Had Standard Shell Rotella T oil in it (15W-40)
I did add in a quick oil change valve in place of the drain pan bolt so from here out I can pull a sample without draining the oil.
Anyone else with a newer Cummins seeing similar results? Perhaps Blackstone's target Averages are wrong?
"Comments: There is some excess metal here. Aluminum typically shows piston wear and iron is from steel parts. Copper shows brass / bronze wear. Potassium can show coolant, but we sometimes see potassium and aluminum in new diesels, probably from the intercooler or maybe emissions parts. Thats not going to explain the iron and copper though. Even though the TBN is fine at 5.3, a shorter run is recommended until we get some idea of which direction these metals are heading. Check back in 5,000 miles or so."
Element: Amount found: Universal Average:
Aluminum 9 3
Chromium 1 1
Iron 65 24
Copper 20 7
Lead 0 1
Tin 0 1
Molybdenum 60 34
Nickel 0 0
Manganese 1 1
Silver 0 0
Titanium 0 2
Potassium 26 8
Boron 106 50
Silicon 10 5
Calcium 1591 1657
Magnesium 433 584
Phosphorus 935 1027
Zinc 1166 1219
Barium 0 0
SUS Viscosity 74.8 69-80
cSt Viscosity 14.20 12.7-15.8
Flashpoint 430 >410
Fuel % Antifreeze % ? 0
Water % 0 0
Insolubles % 0.3 TBN 5.3 >1.0
Just got back my first UOA from Blackstone and I am concerned with the wear metals, potassium, and silicon presence as noted.
Truck had 38,000 on it at the time of the sample. Oil had 6800 miles on it. Had Standard Shell Rotella T oil in it (15W-40)
I did add in a quick oil change valve in place of the drain pan bolt so from here out I can pull a sample without draining the oil.
Anyone else with a newer Cummins seeing similar results? Perhaps Blackstone's target Averages are wrong?
"Comments: There is some excess metal here. Aluminum typically shows piston wear and iron is from steel parts. Copper shows brass / bronze wear. Potassium can show coolant, but we sometimes see potassium and aluminum in new diesels, probably from the intercooler or maybe emissions parts. Thats not going to explain the iron and copper though. Even though the TBN is fine at 5.3, a shorter run is recommended until we get some idea of which direction these metals are heading. Check back in 5,000 miles or so."
Element: Amount found: Universal Average:
Aluminum 9 3
Chromium 1 1
Iron 65 24
Copper 20 7
Lead 0 1
Tin 0 1
Molybdenum 60 34
Nickel 0 0
Manganese 1 1
Silver 0 0
Titanium 0 2
Potassium 26 8
Boron 106 50
Silicon 10 5
Calcium 1591 1657
Magnesium 433 584
Phosphorus 935 1027
Zinc 1166 1219
Barium 0 0
SUS Viscosity 74.8 69-80
cSt Viscosity 14.20 12.7-15.8
Flashpoint 430 >410
Fuel % Antifreeze % ? 0
Water % 0 0
Insolubles % 0.3 TBN 5.3 >1.0