oh yeah i just thought i would add this. on the engines i used to work on we would have to use a/s on the igniter plugs but no one ever did. and every 50 acft hours they would have to be pulled. no one ever had a problem. and those suckers get hot. on average they run at say 800*C (not *F). if you do the genaric conversion it would be to double it and add 32 you get over 1600*F, now thats some heat.

=)