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    2021 Duramax, 22k miles; (unknown oil and miles)

    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.
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    Can you download pdf files here?

    OK
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    Can you download pdf files here?

    How to post pdf files here.
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