Oil Requirements

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When draining the engine oil, allow at least 20 minutes after engine shutdown to make sure that the oil contained in the upper parts of the engine has returned to the oil pan.

The 6.7L diesel engine may be operated over a wide range of operating conditions. It is important to match the viscosity of the engine oil to the vehicle operating conditions. Use the following statements and chart to make sure the oil viscosity chosen is compatible with the expected vehicle operating conditions.

Use an engine block heater at temperatures below -23°C (-10°F). The engine coolant reaches maximum temperature after approximately 3 hours of engine block heater operation.
Use the same engine oil and filter change intervals when using synthetic engine oil.
Use Motorcraft® oil or an equivalent oil conforming to Ford specification WSS-M2C171-E or API service categories CJ-4 or CJ-4/SM.

Fig 1: Engine Oil Viscosity Graph
Courtesy of FORD MOTOR CO.

NOTE: ¹ For severe duty usage, use SAE 5W-40 API CJ-4.
² For biodiesel (grades B5-B20) usage, use SAE 5W-40 or SAE 15W-40 API CJ-4.

The following operating conditions are considered severe duty service.

frequent or extended idling (over 10 minutes per hour of normal driving).
low speed operation/stationary use.
if vehicle is operated in sustained ambient temperatures below -23°C (-10°F) or above 38°C (100°F).
frequent low speed operation, consistent heavy traffic less than 40 km/h (25 mph).
operating in severe dust conditions.
operating the vehicle off road.
towing a trailer over 1600 km (1000 miles).
sustained high speed driving at Gross Vehicle Weight Rating (GVWR).