Spark Plug thread anti-seize cmpnd

[wpurple]

I just changed the plugs in my 99 Mounty 5L and I didn't use anti-seize thread compound, I never used the stuff in any of my vehicles and never had a problem but the manual says I should have done so.....

Should I pull them out and coat the threads? Or don't worry bout' it? The heads are cast iron so it shouldn't be any different than any other vehicle I have owned???

Is it more for aluminum heads and the disimiliar metals?

 

[G-rigged]

i've only heard of it being used on aluminum heads. I've never used it on cast iron because its not needed. Just when you have two different metals.

 

[RiverRat]

Anti seize is a good idea if you don't change your plugs often or if the engine gets wet or in a marine enviroment(rust). But you will be ok without it.

 

[Runnin'OnEmpty]

With today's "100K mile tuneups", it's a good idea to use anti-seize. I wouldn't remove the plugs again just to coat them, however. I'd use it on the next plug change.

It's very good on exhaust system bolts, too.

 

[wpurple]

I am going to leave them in, but I will change them in about 50K. The truck has 64K on it and the original plugs were pretty well worn. There didn't appear to be any anti-seize on the threads from the factory and they came out really easy.