Iridium Versus Platinum Spark Plugs

[Celshot]

I have a 99 ES 300, 38K. I need to replace the plugs. The car has a sticker stating Iridium plugs should only be used. I can only find them at the Lexus dealer here in Honolulu for $12.50 each. I can get platinum plugs for $4 each.

Can I use the platinum plugs? What is the difference in plugs? Will the platinum plugs hurt the car?

Celshot

[SW03ES]

Basically the iridium plugs have a cleaner more precise spark, they last longer, and they retain their performance longer into their lifespan. I would stick with Iridium.

[steviej]

toyota uses them too, see the parts guy there. The same plug may be cheaper there.

also try:

http://www.densoiridium.com/index.php

they might have a list of dealers on your island.

steviej