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I have not read any posts in this plug on this forum.
Most stick witht he stock Irridiums which are good for 100K miles .
Those demanding more performance but prepared to change at 20K miles switch to copper.
I have not read any posts in this plug on this forum.
Most stick witht he stock Irridiums which are good for 100K miles .
Those demanding more performance but prepared to change at 20K miles switch to copper.
I put headers on a 28K miles the OEM plugs were shot so no way OEM plugs are going to last to 100K , that is if you don't care about performance.
They say E 3 spark plugs, to be free of defects in material or workmanship, for five years or 100,000 miles
Last edited by wolfman04; Dec 27, 2009 at 11:21 AM.