If you are thinking about purchasing a heavy-duty 2021 Ram 3500, then you are most likely going to be using this truck for work. As a rough and tough model that can handle the hard jobs, keeping up with maintenance is crucial for optimized performance. So, how often should you change the oil in a Ram 3500 that is equipped with one of the two available turbo diesel engines from Cummins? A good rule of thumb to go by is about every 6 months or 500 hours of operation time. You should never exceed 15,000 miles without a proper inspection. These limits are put in place to ensure that the lifespan of your Ram is as long as it can be. While you can drain and replace the oil by yourself, you also have the option to bring it in to our service department. To schedule an appointment, get in touch with our certified technicians today!