Spark plugs and anti-seize

I think my Denso one-step plugs are making the car to misfire. It came with the car and has been fine for more than a year, and just recently it started to misfire in cylinders one and four, not sure why, but I'm suspecting the plugs. Nothing is loose, coilpacks seems to be fine.

I have ordered a set of NGKs and I am wonering is it a good idea to use anti-seize on spark plugs. I have heard for those that do use anti-seize recommends a copper compound which has conductive properties. I have looked in the service manual, it says nothing about anti-seize, so anyone with any information on the subject would be great. Thanks.

 

awesome, thank you.

this was posted after Will's reply...not sure what happend there

 

its not recommended. I've serviced SUBARU engines with over 300,000 original miles and I've never had, or heard of, any issues with spark plugs seizing into the head.

 

Anti Seize on plugs is never a bad idea.

 

does it matter if the compound is conductive or not?

 

It shouldn't matter

Matt

 

if you use it use the copper and use it sparingly...Work at toyota and do not use.plugs stay in cars up to 100k.

 

i change mine too frequent to need any anti-seize...

 

never used it on any of my cars with aluminum heads so i doubt i'm going to use it on the STi, just double checking