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The 2015 Ram 3500 6.7L Cummins Diesel requires 12 quarts of SAE 5W-40 for driving in temperatures below 0 degrees F, or 15W-40 for temperatures above 0 F. It's crucial to adhere to these guidelines, as failure to use 5W-40 in subzero conditions could result in significant engine damage. To complete the oil change, along with fully synthetic motor oil, you'll need a WIX57620-EA filter. The oil changing process is standard, just remember to tighten the oil drain plug to 37 ft-lbs of torque upon reinstallation.
The amount of motor oil needed for a 2015 Dodge Ram 3500 equipped with a 6.7L Cummins engine is 12 quarts in the United States.