2024 Gmc Duramax Oil Capacity. 6.6l duramax oil change guide, including motor oil requirements (viscosity charts and api categories), engine oil recommendations, oil change procedures, service intervals, and a list of relevant replacement parts. Oil pressure is between 19 and 21 psi once in a while it will jump to 37 but drop right back down to 19 regardless of engine temp.
This is the first time i got a def message on the 2024, but i remember. I never worry about the oil breaking.