Replacing spark plugs

[Howard]

Do the threads need anti-seize?

 

[BW86]

Need? No, but I like to put some on anyway. Just make sure you don't overtorque it.
You only really need it when installing steel plugs in aluminum heads.

 

[fstime]

Yes.

 

[woodie1]

Originally posted by: Howard
Do the threads need anti-seize?

It's a good idea. Particularly if your heads are aluminum.

 

[Howard]

Some pages say that you shouldn't use it if the threads are plated. Is this true?

 

[CycloWizard]

I've always just coated the threading with a little engine oil. This has worked for me for the last 10 years with many different kinds of plugs in an aluminum head (actually, two aluminum heads 😛).

 

[PandaBear]

A little $1 package of anti-seize lasted me 8 set of spark plugs change (4 banger), so might as well put some on.

 

[Howard]

Well it's definitely not the monetary aspect of it...

 

[thecritic]

Yes, but when using anti-seize, you need to reduce the torque spec slightly as the specs are usually set with dry fasteners.