- Joined
- Mar 3, 2024
- Messages
- 4
I have a 2021 duramax. It has between 21,000 and 22,000 miles. I had an UOA done by JG Lubricants. I had two things come back out of range. The Iron was 20ppm and the copper was 26 ppm. What does everyone think about those numbers? There paperwork shows abnormal.