2024 Duramax Oil Capacity V8. Here's all the info you need to know, from when it was first built to all those big numbers. 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.
Factory fill is delvac 15w40. The duramax diesel engine and its insane torque is the best thing about this truck.