6.7L Cummins diesel care
On a 2026 Ram 2500, 3500 or chassis cab with the 6.7L Cummins, Ram's plan calls for an oil change every 15,000 miles, 12 months or 500 engine hours, whichever arrives first, or sooner if the oil change indicator says so. Hours count on a farm truck that idles through harvest, so bring the hour meter reading.