Spark Plug grease / lube on threads?

[Who]

I bought some plugs at my local Napa and the parts guy told my to make sure and lube the spark plug threads and spark plug boot with dielectric grease. Now I have heard of putting a small amount of dielectric on the spark plug ceramic to ease the removal of the boot from the spark plug. Should I put any lube or any anti seize on the spark plug threads that mate to the head?

Seems to me that dielectric on the threads would insulate or prevent the spark plug from grounding itself to the head.

Thanks!

 

[jdub]

Nickle (1600 deg F) anti-seize on the threads....don't go nuts with it. Dielectric grease on the ceramic/tips is fine.

 

[MK3Brent]

I never have, but it's good practice.

 

[jetjock]

I usually don't use anything on the threads but when I do it's an aviation product made just for the purpose:

http://tinyurl.com/69shq5

A bottle will last forever. Whatever you use don't get any of it on the electrodes...

 

[Poodles]

Many plugs come with the grease already on the threads.

 

[IJ.]

Antiseize on the threads here after unscrewing a plug thread on an aluminium head many years ago

 

[jdub]

Antiseize on the threads here after unscrewing a plug thread on an aluminium head many years ago

Ditto!
Steel threads doesn't play well mating with aluminum

 

[Supracentral]

I guess it depends on what you're running.

If you are running close to stock on platinum's, they might be in there long enough to cause a problem and anti-seize is a good idea.

If you're running 28 psi, race gas and copper plugs, the damned things don't stay in long enough to seize, trust me...

 

[MK3Brent]

I guess it depends on what you're running.

If you are running close to stock on platinum's, they might be in there long enough to cause a problem and anti-seize is a good idea.

If you're running 28 psi, race gas and copper plugs, the damned things don't stay in long enough to seize, trust me...

That must be why I never had problems... hehe.

 

[fool'ssupra]

My car's just stock, but I always use nickel-based antiseize when I'm working with aluminum threads or high-temp threaded parts.

 

[Guyana00]

What SC said makes sense, I would judge based on that for your application.

If you do put though, the torque spec becomes less acurate and you need to increase it a bit.

 

[IJ.]

What SC said makes sense, I would judge based on that for your application.

If you do put though, the torque spec becomes less acurate and you need to increase it a bit.

Decrease it a bit....

 

[Who]

My car is not a daily driver so the plugs do stay in for quite some time. Antiseize on the spark plugs threads and dielectric on the ceramics it is.

Thanks guys / gals !