or if the engine is on a regular diet of biodiesel fuel. If your 6.7 Power Stroke falls under the severe service category, replacing the engine oil and oil filter every 5,000 miles (or as ...

Called the B6.7 Octane, Cummins' first gas engine is a turbocharged 6.7-liter inline-six that runs on 87-octane gasoline. Output ranges from 200 horsepower and 600 pound-feet of torque to 300 hp ...