Hi Guys,
Last I have read (about 3-4 years ago) is that Ford does not suggest anti-seize for the plugs. Has this changed? The reason I ask is that I was at the MotorCraft website double checking the number of the finewire plug for my 99 5.4L, and it suggests using anti-seize. I thought MotorCraft and Ford worked hand in hand with each other. So who is right?
If I should use anti seize, does the reccomended torque value of 13-foot pound change?
Thanks for your help.

 

I've logged almost 500K miles on my modular powered vehciles altogether in the last 8-9 yeas,and have always used anti-seize on the plugs.I've never had a sparkplug blowout issue,and have changed the plugs every 30-50K miles(more often on my Tbird since I run the copper core plugs in it). I've also never used a torque wrench on the plugs-that's asking for trouble-all it takes is for that wrench to be a slight bit out of calibration,and there's a set of stripped threads or partially stripped threads,and a subsequent plug blowout from those partially stripped threads.I'd be willing to bet that the majority of the plug blowouts are from overtightened plugs that have damaged the threads.
JL

 

If you do, be sure it will conduct electricity.

 

I turned a wrench for a living back in the '80's, and always applied anti sieze to the spark plug threads when ever they were going into an aluminum (alloy) head. this was done because of the electrolosis created due to dissimilar metals causing the plugs to sieze up in the heads, and I don't think I need to expand on that.

cast iron heads never seemed to pose that problem.

 

Thanks guys. I know that most here recommend applying anti seize for aluminum heads but Ford never did and so I used to follow their advice. But now I am wondering, especially with Motorcraft saying to use it. I will probably put some on the threads the next time.
I do use a torque wrench as I have a decent one and 13-foot pounds is not much so I am inclined to use it with an aluminum head. However, does anyone know if I should adjust the torque value as Ford's recommendation is for 13-foot pounds without anti seize compound?

 

I've done many modular spark plug changes.

A couple tips-- make sure the motor is stone cold before you start.

Use anti seize on the threads.

You don't need a torque wrench either, just get them hand tight then snug it up.