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Oil Jugs On Engine

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The 6.7L Diesel is a great engine, but not without costs. The price of diesel is pushing $3.85 a gallon around here, and when mileage ranges from 11 to 18 mpg, those dollars add up. The Cummins also requires approximately 3 gallons of engine oil every 7,500 miles. We like using Rotella 15W-40; we may need to get a barrelful.