This is the first oil sample I have ever run for this truck and I'm not sure what to make of it. Blackstone says the copper is a little high but that it can be wear metals from being young. While just shy is of 30k miles is young, I would think most wear metals would gone by those miles. I do believe the other wear metals looked good though. I posted this result on a titan group and some other members posted their results as a comparison. No one else had copper levels as high as mine, they were in the 5-7 range. Also, an amsoil rep (they always chime in) pointed out that my viscosity was pretty low at @100°C. The schaeffer website shows it should be 13.50 - 15.00, mine was 13.06. Is this something to worry about with this oil? This was the first run of schaeffers in this engine and this interval covered the summer months in AZ (well over 100 everyday) along with about 2k miles of heavy towing.