im about to get some iridium spark plugs soon.anybody have sumtin to say about iridiums?are cleaner spark plugs supposed to give me better gas mileage?im running like 350 for a full tank right now.i know that were only supposed to use platinum but...i know dozens of people using iridiums.how bout gas additives?anybody use them?i read in the manual that im not supposd to that why i havent put anything on my gas tank yet.

 

Denso recommends replacing Iridium plugs every 30k. Center electrode on Iridium plug is 25% of size of Platinum and copper plugs so electrode erosion is a problem with iridium plugs. With this guy on ebay selling 6 NGK Laser Platinums for $37 shipped I'd go with the Platinum Plugs with its longer life. I use BG 44K Fuel System Cleaner once a year to clean things up. Car runs great!

 

Yeah for the money vs. performance from the Iridiums I think you would be better with platinums or copper. I have Iridiums and I can't tell a difference from my stock plugs.

 

Iradiums are good for the first few K miles.. AFter that they work just as well as stock plugs.

 

iridiums arent bad at all

 

Call me and tell me that in a month

 

yeah yeah yeah...skeptics

 

From what I've read about the Iridiums is that they work better with turbo/intercooled systems because they are a hot plug, therefore we (NA vehicles) don't really need hot plugs due to our high compression.

Supposedly a cold plug (or platinums as our car comes stock with) is better for our high compression engines.