Engine Oil Viscosity

 WARNING: CONTINUOUS CONTACT WITH USED MOTOR OIL HAS CAUSED SKIN CANCER IN LABORATORY MICE. PROTECT YOUR SKIN BY WASHING WITH SOAP AND WATER.

Gasoline Engines (4.9L, 5.0L, 5.8L, 7.5L)

To choose the correct viscosity oil, temperatures in which the vehicle will be driven must be considered. The use of SAE 5W-30 oil is preferred in all climate conditions. The use of SAE 10W-30 is acceptable in moderate to hot climates.

Ford recommends using Motorcraft oil or an equivalent oil meeting Ford specification ESE-M2C153-E and certified by the American Petroleum Institute for gasoline engines.

Use only engine oils displaying the American Petroleum Institute certification mark on the front of the container.

Diesel Engine (7.3L)

For normal or severe service, use Motorcraft oil or an equivalent oil conforming to Ford specification ESR-M2C171-B or API categories CG-4/SG, SH or CE/SG, SH (if former is not available). Do not use oils labeled with only one of the following category designations, SG, SH, CE or CG-4, as they could cause engine damage.

Engine oils with improved fuel economy properties (energy conserving) are currently available. If you use an energy conserving oil, be sure it meets the recommended Ford Specification, API service categories and SAE viscosity grades listed in the Specifications chart. Some energy conserving oils do not meet the requirements necessary for your diesel engine.

NOTE: The use of SAE 30 oil is preferred when ambient temperatures are above 0°C (32°F). When temperatures are expected to be below 0°C (32°F), SAE 10W-30 oil should be used. When using 10W-30 oils, API category CD/SG, SH is acceptable, although CF-4/SH, SG or CE/SG, SH is preferred.

The use of correct oil viscosities (thickness) for diesel engines is important for satisfactory operation (especially in cold weather). Determine which oil viscosity best suits the temperature range that is expected to be encountered for the next service interval.