ORIGINAL: jedijody

The Facts For The Record:

Iridium is a natural chemical element, anyone can buy it, use it, advertise it, or sell it, no one can copyright or trademark it.
NGK has trademarks for the names ''Iridium IX'' and ''Laser Iridium''.
DLE does not market spark plugs of any kind.
DLE lists the replacement spark plug for their engines as CM-6.
OEM DLE spark plugs are supplied by Rcexl.
Rcexl does make and market an Iridium spark plug under the Rcexl brand name, it is designated ICM-6.
Nowhere does Rcexl or DLE use the brand name NGK next to the spark plug designation CM-6. (Exception: Rcexl has a web page that shows for clarification, 6 different CM-6 type spark plugs including NGK. Rcexl makes and sells 1 of those 6 spark plugs and the Iridium ICM-6 spark plug)
''CM-6'' or ''CM6'' are not copyrighted or trademarked names or designations, any manufacturer can use CM-6 or CM6 to designate any spark plug, bicycle, brazier, or Popsicle for that matter, they wish to make.

http://www.rccdi.com/

http://www.dlpower.net/index.asp