Here is the UOA results on a '05 Duramax. The truck belongs to a close friend of mine and he just switched over to Schaeffer's 15W-40 series 7000 after taking the sample for this UOA. This UOA is not from Schaeffer oil but whatever brand the chevy dealer used when he took it in (I know - first mistake). Anyhow, this was the first time towing a 10K 5th wheel from Missouri to San Antonio thi summer and the truck only has 31K on it. I am assuming the high copper is from the engine still breaking in, but I need your input/advice. The oil was changed to Schaeffer's after the sample was taken and waiting to hit 3K before taking another sample.
copper 256
iron 21
chrome 0
alum 2
lead 3
moly 6
phos 1632
zinc 1745
mag 440
calc 3507
anti freeze .0
fuel dil negative
%h2o .0
silicone 11
visc 14.25
sulfer 9
oxid 2
nitrat 7
soot 0
All the numbers look great but what could be the high copper at 31K total miles and 8K on the oil?
copper 256
iron 21
chrome 0
alum 2
lead 3
moly 6
phos 1632
zinc 1745
mag 440
calc 3507
anti freeze .0
fuel dil negative
%h2o .0
silicone 11
visc 14.25
sulfer 9
oxid 2
nitrat 7
soot 0
All the numbers look great but what could be the high copper at 31K total miles and 8K on the oil?