[richl]

100k is bad mojo for plugs.. i hate to tell you how many heads i have to replace because when you wait that long the plugs have a tendency to remove some of the threads with them . at the dealership i used to work for we called it the 100 thousand mile head replacement.. i do mine every 30 k regardless.... and some more info platinum plugs are a waste of money.. i have corrected thousands of misfire codes .. when a small piece of carbon breaks off and causes the plug not to fire .. the piece was small enough on a platinum plug it would not fire and if it was a normal plug it would continue to fire and just burn off. just my .02 worth .................................................. .............. rich