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  1. M

    Oil and Filters

    New to Duramax, have a 2022 HD 2500 crewcab and wonder what the Forum suggest for Oil, Filters and miles between changes for oil and fuel filters. My last new PU was a 1987 F350 single cab. I always used Delo 15-40, Napa Filters and changed at 2500 to 3000 miles. Also wondering about buying...
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