Posted By: Robm626
2019 duramax l5p; Delvac 1300 15w-40 3k mi - 10/11/19 09:22 AM
Hey guys. I have a new 2019 duramax l5p and my oil life indicator has been dropping much faster than I’m used to. I’m lucky if I get 3000-3500 miles on an oil change. Also the last sample I had tested came back higher copper. Any idea what would cause that? I just changed the oil again at 8166 miles and sent the sample in. I will post new report next week when it comes in. This report is my last 2.