What oil does a 2004 Duramax take?
What oil does a 2004 Duramax take? Engine OilViscosity:15W-40, 10W-30 (Above -18) SAE 15W-40 is preferred. 5W-40 (Below -18) Improves cold starting.Capacity:10 quarts (with filter)After refill check oil level.Torque:16 mm Hex - 62 ft/lbs (Oil Drain Plug) 13 mm Hex - 18 ft/lbs (Oil Drain Plug) Do you run synthetic oil in your Duramax? Enter your ride HERE to be a part of this months Ride of the Month Challenge! I'm new to the forum and I am ready to do my second oil change (dealer did first) in my 2019 2500 Duramax. I have always run synthetic oil in...