Best Oil For 2024 Duramax. Factory fill is delvac 15w40. Checking with general motors, the lz0 duramax diesel has an “acceptable oil usage” range with up to 1 quart per 2,000 miles, or more if you are doing a lot of towing or driving at high speeds (i.e.
We’ll also provide you with our top recommended oils for 6.6 duramax engines, including synthetic and conventional oils, oils for fuel efficiency, high mileage engines, and. Discover the optimal 6.6l duramax oil capacity and type for peak performance.