Hi,
I saw a few replies to try the Bosch Platinums.
I have tried them several times since they were introduced
in the early 80s and they don't work in an engine that is tough on plugs.
Bosch does make a good platinum plug - the W3DP series,
at about $10 each. Those are the plugs I use in my 911s.
The "K-Mart" Bosch plugs I would not use on any car.
NGK platinums and palladiums are very well made, I have 
them in my SE-R and they last a long time.
Regards, mike piera  AnalogMike@aol.com  '72 911S  '73 911RS Clone
my racing pages - http://members.rennlist.org/analogmike/
~^v^~ aNaLoG.MaN ~^v^~   vintage guitar effects   www.analogman.com 
 
 |