2024 Duramax Oil Capacity Calculator. You will need 7 quarts of engine oil and dexos d oil 0w20 is required. I've had my 2024 sierra 2500hd for a fairly short time and only have 470 miles on it, yet the oil life indicator already reads at 77%.

6.6l duramax l5p maintenance schedule and service information, including service part numbers, oil and fluid specifications, and fluid capacities. 18 ft/lbs (oil drain plug) replace drain plug seal.