Patrickt,
Hey good morn Patrickt. I have never heard anyone say using antisieze on a plug can be harmful. I am not looking for a pissing contest but rather just your reasons and info source. I have inserts packaged with aluminum heads from high end manufacturers that insist on antisieze on plug threads or they will not honor a warranty claim for thread damage. The 2 different metal types and the heat cycles of a plug to head are the perfect scenario for galling of the threads. The aluminum expands at such a different rate than the steel body of the plug and add a little combustion residue on an exposed thread or tip and bingo. Caution should be used to apply only on the threads and not the tip or electrode as 02 Sensors do not like it.
This is from Champion with link provided. I read it to say they already applied antisieze. I went to several sites and the ones that said NOT to apply and listed the reason was = antisieze is a conductor and it will foul the plug. They also agreed with you and me that torque needs to be considered, well .. that makes sense.
Since aluminum and steel expand and contract at different rates, removing spark plugs from an aluminum cylinder head while hot can actually cause thread and cylinder head damage. Before installing the spark plugs, make sure the threads are clean and in good condition. If in doubt, run a thread chaser through the plug opening in the cylinder head. Champion
recommends that you do not use an anti-seize compound, since one has already been applied to the plugs at the factory.
http://dodgeram.info/Engine-Gas/Spar...book.html#tips or
http://grounds-mag.com/mag/grounds_m...ge_spark_plug/