look at that plug is a NGK ZFR5F-11, i don't know if that is ok, the car is bone stock, i want to know if i should run the optional specs listed on the hood for hot climates or continuous high speed driving which is NGK ZFR6F-11??
my guess would be go for the NGK ZFR6F-11 cuz the temps down here are 85 all year round and i do a lot of high speed driving, so what do you guys think?


[Modified by GZERO, 5:28 AM 10/23/2002]

 

Yes, run the NGK ZFR6F-11.

 

EDIT: Thank you for answering

i forgot, so don't flame me, but the ZFR6F-11 is a colder plug, right? but why the surrounding of the plug has carbon but the rest of the plug doesn't?


[Modified by GZERO, 9:16 AM 10/23/2002]

 

Yes it is a colder plug. I'm not sure what you are trying to ask on the other question though. What part of the plug has carbon?
For some great tech info on spark plugs go here...
http://www.ngksparkplugs.com/techinfo/spark_plugs/