Might as well put this out there also since so many people are swapping their plugs (including me), and it'd be nice for everyone to be able to know what's going on with the old ones.
<a href=http://www.dansmc.com/Spark_Plugs/Spark_Plugs_catalog.html target=_blank>Reading your spark plugs</a>
So anyway, spark plug reading seems simple and useful, blah blah blah.
Linear Mode
