To find the correct specification, you MUST consult your owner's manual. This manual will have the precise torque specification for your specific vehicle.
Failing that, you can try these options:
* Online repair manuals: Sites like Chilton or Haynes offer repair manuals (often for a fee) that will contain the torque specifications. Make absolutely sure you're using a manual for the correct year and engine.
* Ford dealer: A Ford dealership parts department or service advisor can likely provide the correct torque spec.
Improper torque can lead to leaks or stripped threads. Using a torque wrench is highly recommended to ensure the plug is tightened to the correct specification. It's better to be slightly under than over-torqued.
