I drive a duramax, 2006 ! 150,000 miles. Changed all fluids at 100k. I only pull a camp trailer and boat. Max weight of 7800 or so. No complaints so far! I had two and sold the higher mileage one earlier this year. I dont chip and such! The last Dodge i owned ran good, but had the worst body of any pickup I owned in over fifty years of driving pickups! I'm not sure I could bring myself to buy another!