Take a good look at the KE fuel system and even the throttle linkage on a Merc and you will realize that these systems are not designed to the lowest cost, and MB doesn't select spark plugs based on the lowest bid, especially when they play a key role in emissions and fuel economy.
The ignition system and spark plug requirments for methane-powered stationary engines that operate at a relatively steady speed and high load are different from automotive gasoline engines that has a much wider range of speed and load.
I stand by my remarks. Multi-ground electrode spark plugs for automobiles are just marketing hype, but the manufacturers looked at the guy making millions on Splitfires before the FTC shut down his deceptive advertising and decided to get on the bandwagon.
Last edited by Duke2.6; 05-31-2003 at 01:38 AM.