Luke
03-01-2004, 10:37 AM
One who works on their cars/trucks, simply should review this article -- it's very informative. It covers heat ranges as well as guidance on "reading" the plugs.
http://www.ngksparkplugs.com/techinfo/spark_plugs/techtips.asp?nav=31000&country=US
http://www.ngksparkplugs.com/techinfo/spark_plugs/techtips.asp?nav=31000&country=US