I just got a 2019 2500 was curious, when should I do first oil change. I’ve heard at 1,000 or 3,000 even when truck says too. This is my first Cummins I was told on my Ecodiesel to go full 10,000 but changed it at 8,000 no problems with it. Just want to due what’s best and protection for my truck. I tow at least 4 days a week. Thanks for recommendations


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