* For both engines: The oil should meet API service classification SE or SF. These are older classifications; modern oils exceeding these are generally fine.
* Viscosity: The viscosity grade will depend on the climate. Look in your owner's manual, but a common range would be 10W-30 or 5W-30. For very cold climates, 5W-30 might be better. For very hot climates, 10W-40 might be considered, but always check the manual first.
It's crucial to check your owner's manual for the specific recommendations. The manual will provide the exact oil type and viscosity recommended by Ford for your particular engine and operating conditions. Using the wrong oil can damage your engine.